Accidental Penetrations Ch. 01&2

As Dustin watched his older sister, he sighed. From his room he could see her packing her suitcase in her own room across the hall. Erica was gorgeous and voluptuous, her fully developed curves were barely hidden in skin tight jeans and a tank top. He knew that all of his friends would have killed for a chance to see her naked. For a long while he would have done the same. But not now. You see, Dustin has already seen her naked. Gloriously naked. 

Better yet, he knew that he would be seeing her naked again. And not for a few stolen moments, nor with a hidden camera in the bathroom. Oh no. Once more he was going to see her nude with his own eyes, from up close, with her being fully aware of his presence for days. He could still remember the first time he ever saw his older sister Erica naked. 

A year ago, Dustin's parents called a family meeting. They were all there: his older sister Erica, his two twin sisters, Emily and Lily, as well as his two parents and himself. After dinner, their mother had talked to them about the possibility of going on a comping trip next summer. A nudist camping trip. There was a long silence. 

Dustin remembered looking around at his three sisters' faces. Erica was already living mostly at her apartment next to the college she went to and didn't come on most family trips anymore. After their mother's announcement, she merely frowned and was obviously surprised. The twins were grinning, clearly convinced that it was a joke. As for Dustin, all he could think about was seeing his three lovely sisters' naked bodies. He was grinning, but for an entirely different reason. 

To Dustin's surprise, Erica had broken the silence and said that she was willing to give it a try. Dustin had then followed suit. And so all eyes had then turned on the twins who suddenly realized how serious this proposition was. Stunned, they shared a long look and seemed to talk to each other telepathically for a moment as they sometimes seem to do. They then smiled, nodded at each other and said "Yes!" in unison. 

And so a couple of months later the entire family had spent an entire week completely in the nude in a remote colony. To Dustin's surprise, he acclimated very quickly to the peculiar situation. Granted, he spent most of the first day having to hide his erection from his naked sisters. Thankfully, they were very gracious about it. 

Dustin guessed that their mother had been very clear about not teasing him about it. What shook him the most was just how arousing the sight of his mother's breasts were. The twins had pairs of surprising breasts on their very thin frames and Erica had large, voluptuous breasts, but Dustin's mother had more than all of them put together! But that's a story for another time. 

In the end they loved the week so much that they vowed to take at least one such trip every year. Even if the colony had decided to forbid cellphones and computers along with clothes. Dustin was still happy to see his older sister pack. Despite the entire family's comfort at being nude at the colony, it had never really been an option to become full time nudists. That meant that Dustin hadn't been able to enjoy the sight of his sisters', or mother's, bodies since last year. That was about to change. As he was thinking about that, Erica turned and looked at him. She smiled and shook her head, as if divining what he was picturing in his mind. "Pervert..." she joked. 

Dustin smiled and returned to his own suitcase. Packing for a nudist colony was not the same as for other trips, but they still needed to bring plenty of stuff. As he placed his laptop in there, he heard one of his twin sisters laughing out loud. In the room adjacent to Dustin's the two twins were also busy packing. At eighteen years old, even if there was a spare room in the house, they still shared a room and neither wanted to change that. 

Dustin had heard rumors that they had also shared lovers, some with their consent and others as a secret thrill for the girls. He didn't know if it was true, but Dustin certainly suspected that they often shared a single bed. What they did, all alone under the blankets, he had no idea. His imagination was eagerly conjuring up images of some possibilities, but honestly, he didn't think reality matched up to his fantasies. 

If they weren't as voluptuous as their older sister, the twins had remarkable bodies nonetheless. They were both very thin and for most of their lives they had looked like celery twigs. Thankfully, and to Dustin's pleasure, their breasts had developed seemingly overnight two years ago. And despite the fact that they came up pretty late, they certainly developed with a vengeance! 

Still very thin, the twins now had breasts that looked like bubbles of perky flesh on their chests. If,in absolute terms, they were small, on their small frames they looked stunning. "Well..." thought Dustin, remembering his older sister and his mother's breasts. "Maybe I have a skewed reference for what a small breast is. Each of those four identical breasts would fill my hands easily!" Dustin was feeling good as he finished packing, knowing he would soon be presented with a feast of eight breasts as well as four sweet asses and pussies for the coming ten days! 

Come to think of it there would be quite a few more as two of his cousins, two other beautiful girls, would join them later during the week! Dustin had been half in love with Milana, who was about 7 years older than he was, ever since he was a little boy. Dustin's mother had confirmed that she would be there, along with Indiana, the girl everybody knew was an adopted Irish girl. Yet Dustin's uncle, pointing to a few red hairs in his beard, swore that she was his. 

Dustin wished that the third cousin in this family, Katee, would join them as well. But Katee was a very shy girl that has struggled with weight all her life. He just couldn't see her coming to a nudist colony. He hadn't seen her in over a year since her family moved to another state, but they exchanged emails more or less regularly. Then again, the thought of seeing Milana and Indiana naked made up for his disappointment about Katee. 

The next day, after a long 8 hour drive, the entire family arrived at the colony. It was a huge community of people, some of which had come from much farther than Dustin's family. While some came with RVs and others slept in tents, Dustin's family had rented three rooms in the big lodge. 

Obviously their parents would take the room with a queen bed and the four siblings would share two rooms with two single beds each. To everybody's surprise, Dustin would not share a room as Erica as they had last year. Emily said that she wouldn't mind sharing a room with Dustin for a change. When she said it, she leaned against him and hugged him. He was puzzled about her decision, but didn't think much of it because, in any case, he would see her naked every single day for an entire week! 

For Dustin, the first day turned out to be a repeat of last year's first day with his cock feeling like a kid in a candy store. The four women in his family were beautiful and sexy enough, but there were also a lot of other girls and women at the colony. The majority of them were not all that desirable, but enough of them were to cause Dustin some adjustment trouble. 

Late on the first day, he found himself in semi-darkness in his room, staring at the nude form of his younger sister. It was warm enough that she had decided to sleep without a blanket. And without clothes, obviously. On his side, convinced that Emily was sleeping, Dustin stared at her with his darkness adjusted eyes. She was absolutely gorgeous and even though he had seen her naked all day, he'd had the decency to not stare. But with her sleeping, he let his eyes feast before falling asleep himself. 

By the end of the second day, he was now confident that his cock wouldn't spring up unexpectedly. The fact that he had masturbated five times in 36 hours had also helped! After they all ate together on the large deck surrounding the pool, they went back to their room. And so Dustin ended up with Emily in their room. If they had been tired because of the long road trip yesterday, tonight they decided to stay up and chat a while before going to bed. 

One hour later, sitting next to one another on Emily's bed, their back against the wall, the siblings shared a long look. Neither of them would have imagined that they would share so many intimate secrets with each other. During that hour, the room lit only by a single candle, they had talked about nudity, their plans and dreams for their lives and the fact that they had both been single for a long while now. 

And that long conversation confirmed something that had been becoming more and more evident. While Emily and Lily were almost perfectly identical physically, they were starting to grow more and more different psychologically. It was strange how one difference could have so much impact. For various reasons Emily was becoming calmer and more reserved while Lily was extroverted and wilder. Dustin was fascinated by that growing difference given the same genes. 

But it was getting late and deeper, simpler parts of his brains were beginning to take over. Dustin couldn't help from looking at his little sister's body. The more he looked, the sexier he found her. Yes she was very thin, but the way she moved her hips, and that tiny waist, and those out-of-proportion breasts... Damn! Maybe it was because she seemed to always be very subtly dancing. Then again, with her long and thick mane of very dark hair, there was something panther-like about her movements. It was as if she was on the prowl. 

As Dustin realized that she was more beautiful while she was moving, Emily asked him a question about his erection. As Dustin laughed in surprise, he also realized that such a question was probably due to the three or four beers they had drank during their late night conversation. As Dustin, trying to satisfy Emily's curiosity, his cock has gotten harder, much to Emily's surprise and delight. She was laughing about it as he tried to cover it. Eventually Dustin stood up from the bed and turned away. Grabbing a pillow, Emily playfully threw it at him and said "Don't hide, I'm curious!" 

Weathering the pillow assault, Dustin replied "What do you mean, you're curious? You've had boyfriends? You've had sex?"

"Just once!" Emily replied, throwing another pillow. 

"Stop it! I don't believe you!" Dustin replied, throwing one of the pillows back. "Just once?"

"Yes! There are a lot of rumors about twins, but don't believe every one! And now shut up!" she cried, but she was laughing. And threw him another pillow. 

"Really? Just once? Damn!"

Emily went to the bathroom and came back with a glass of water. They were looking at each other across the two beds and Dustin was still stunned. Dustin said "I can't believe this! You're almost a virgin!"

"Shut up!" she replied, throwing a pillow again. 

Dustin hesitated before returning the pillow because of the glass of water. "Put that glass down!" he growled playfully. 

"Never!" she cried, laughing as she threw another pillow. 

"Cheater!" he said, grabbing the pillow in mid-flight. 

By now Emily was laughing very hard and she knelt on her bed to grab the last pillow. When she threw it, she lost her balance and spilled the entire glass of water on her bed. "Fuck!" she cried, trying to remove as much as she could with her hands. 

Dustin laughed and said "Haha! Serves you right!"

"Stop it Dustin!" she replied. "Shit!"

Dustin came to help with a couple of towels, but soon enough the siblings realized that it was hopeless. "Damn it!" she said. Looking at his bed, she opened her mouth but paused. She sighed before saying "There isn't even a couch." After a moment she looked at him and said "Do you mind if we sleep in the same bed?" And then she added "Oh fuck! I don't even have panties to put on!"

Dustin didn't know what to say except "I don't mind sis..."

"I'm sure you don't!" she said, half a smile on her lips. "Sleeping with a naked girl in your bed!"

"Well, that's precisely the problem!" he replied in a flat voice. 

Surprised by the tone of his voice, Emily frowned and looked up. "Oh..." she said, realizing his predicament. "Is it true what they say about nighttime, er... nighttime..."

"Erections?" Dustin finished. "Yeah."

"Oh... Well. I can sleep on the floor."

Feeling bad for her, Dustin said "No, I'll sleep on the floor Emily. You can have my bed."

"No, no... I was my mistake," she sighed again. "Fuck." Looking up at him, she said "Think you can behave? And not mention this to anyone?"

"Of course!" he replied, not even feeling half as confident as he sounded.

The siblings talked a bit more after they turned the light off. But now the nudity they had carelessly enjoyed all day was awkward. Being naked around your sister or brother in a nudist colony outside in the sun was one thing. Sharing a single bed in the darkness was quite another.

And so, unsurprisingly, Dustin woke up a couple of hours later. He was on his side and spooning his naked sister. And just as unsurprisingly, his erection was poking her ass. Although he was spooning her, his hand rested on his thigh instead of wrapping around her upper body. He could remove that hand easily enough without waking her up. His cock, though, was another matter. It was lodged pretty good against her ass, between her cheeks. There was no way he would be able to pull out of there without her waking up. 

Taking a few long breaths Dustin tried to calm himself, hoping to make his erection fade away. How hard could it be, given that he had done it all day long yesterday? Well, it turned out to be pretty hard indeed. Instead of going away, his erection grew until it was painful in the cramped space. The cramped and very hot space. Shit! Until that point Dustin hadn't moved a muscle and he still didn't know what to do. 

Very slowly, he tried rotating his hips to see what it would do. Well. The first thing it did was to lessen the awkward pressure, so that was good. His cock was truly becoming painfully bent. The second thing it did was make the taut head slide against the delicate skin of his sister's cleft. Dustin's mouth opened wide in delight as he took a deep breath, but he quickly bit his lower lip to stifle his moan. "This is mindbogglingly good!" he thought! "I've been single for way too long, and this is the worst timing ever! Fuck!"

He tried moving again and soon realized that he would have to slide downward. Simply rotating wouldn't work. And so, slowly, an inch at a time, Dustin used his other hand to push himself lower. Every time he slipped down, he was pummelled by another surge of pleasure. "Am I thinking this through correctly?" he wondered. "Or is my second brain, the one currently nestled between Emily's ass, only making me believe that making my cock slip ever more towards her pussy is a good idea?"

Breathing hard and covered in sweat, Dustin shook his head and kept going. The lower he slipped, the deeper his cock pushed itself against her cleft. Concentrating on moving slowly and not waking her up, Dustin was suddenly surprised to feel the tip of his cock pressed against his sister's pussy. "I was tricked!" he thought, cursing his second brain! 

But despite his curse, the pleasure he felt was indescribable. He could feel the delicate and smooth shaven skin of her pussy pressed against his cock. Before he could think about what he was doing, his hand gripped her hip more strongly and he pushed against her. "Fuck!" he cried as a flood of pleasure washed over him. His cock was now nestled in the Bermuda triangle! The Bermuda triangle was that sacred space between the pussy and the closed thighs of a thin girl. It was something he had come up with his previous girlfriend when—

Dustin gasped as Emily moved. He froze, but his mind was spinning with pleasure as Emily moved, making her thighs rub against his cock. When she finally stopped moving, Dustin silently let out a long breath and tried to relax. "Hmmm..." a sleepy moan from Emily. Fuck! And then a "Ahhh...", another moan but one of an entirely different nature. A sexual moan. Fuck! And then, to Dustin's horror and delight Emily began to squeeze her thighs together. "Oh... Lily..." she moaned very faintly. 

Closing his eyes hard, Dustin took a deep breath. "Fuck... She's having a fucking sexual dream about her sister. Now. Right fucking now! Christ!" Dustin didn't know if he should just pull out in one go. That would certainly wake her up, but he didn't know how long he could hold on to his sanity if he remained here. He couldn't simply fuck his little sister! Crap!

And suddenly dustin opened his eyes wide and opened his mouth just as wide. Emily was getting wet. And so what had already been a irresistibly delicious position turned into a means of enslaving him. If the skin of his cock had been firmly locked against hers before, things were now getting much more slippery. Every few seconds, as Emily rotated her hips, the tip of Dustin's cock rubbed against her dripping lips.

Was she awake? Was she feigning sleep yet totally into this idea of sex with her brother? Dustin's mind reeled with such a possibility and he grabbed her hip more strongly. But then he stopped himself. "Are you crazy Dustin?" he thought. "You're the only pervert here. Not only did you ogle your sister's naked body all day long, but you've now placed your cock against her pussy! While she was sleeping! There's no way she's interested in having sex with you! She's your sister!"

And then Emily moved again, sending another shockwave of pleasure up his cock. And that was too much. Dustin was a 20 year old male, hot blooded and single for too long. Sister or not, a warm, wet pussy was beyond his ability to resist. He knew he had to pull away right now. Even if she woke up. And so he began. Slowly. During that time, Emily was still moaning faintly, whispering her sister's name. "Well, that explains a lot..." he thought. 

As his cock slipped against his sister's pussy, Dustin was afraid that he might lose it. When he felt the tip pushing against her hole, he thought "Just one push, just a slightly different angle..." Once again he shook his head and managed to find the will-power to pull completely out. It could have worked. It really could. If only he hadn't paused to savor a few more seconds of his sister's delicious lips. But he did, and so things were in place when they heard a rather loud clicking sound. 

Dustin, awake, knew that it was someone unlocking the door to their room. The thought of someone catching them in such a position made him jerk very quickly. Jerk towards Emily. And Emily, who had actually been sleeping, was frightened awake by the noise and that fright made her jerk very quickly as well. Jerk towards Dustin. And so that meant that despite Dustin's best attempts, his cock ended up buried to the hilt in his sister's devilishly sweet pussy. 

Emily gasped at the intrusion, but froze in place. In the charged silence, they both heard Lily's voice "Oh, I'm sorry. I didn't want to wake you up." To their horror, Emily and Dustin realized that she was walking in. They were going to be discovered. But Lily's blue eyes clearly weren't used to the darkness and she fumbled to the bed to lay a small kiss on her sister's brow. "Good night." she then said. 

"Good night Lily... I love you." Emily replied in a shaky voice. 

"I love you to sister." Lily said. A second later, passing what she thought was Dustin's bed, she said "Good night Dustin."

Swallowing, Emily whispered "I think he's already sleeping Lily."

"Oh, right! Well, if he is then..." 

And Lily walked back towards her twin sister, leaned forward and kissed her on the lips. Emily kissed her sister back, letting her tongue dance with Lily's for a few moments. She was convinced that Lily would see the big shape of Dustin right behind her. But in the end she didn't. After their long kiss, Lily quietly walked back out and closed the door behind her. 

Once Lily was gone, Emily said "What the fuck Dustin..."

"I'm sorry Emily," he replied, his voice even more shaky than Emily's. His cock was still inside her yet he was frozen in place. 

"Why did you do that?" she asked. 

"I didn't!" he gasped. "Not on purpose. I know it looks bad, but I woke up with an erection pressed against your ass. I tried to pull back without waking you up and..." he stopped, knowing it didn't seem credible at all even if it was the truth.

"And you decided to fuck me without my consent?" Emily replied haltingly as she still tried to slow her breathing. 

"No!" Dustin swore. "I really tried to pull away. But I ended up trapped in your Bermuda's triangle?"

"What?"

"You know, the space between your pussy and your thighs," he whispered, his mind reeling with lust. His cock was pulsing inside his sister's pussy, sending waves of pleasure to his brain. 

"Oh... And so it was then that you decided to fuck me?" she asked. Dustin couldn't quite place what he could hear in her voice. 

"No. It was then that I began to pull away. It was easier because your pussy was wet by then," he said. 

"Wet?" Emily breathed. "No way! You did this!"

Dustin shifted his weight slightly and his cock moved inside her. They both gasped. His mind registered once again that he was still inside her as they talked, but he was too keyed up and nervous to conclude anything about it. He then said "Emily, do you think I would have ended up all the way inside you if you hadn't been thoroughly wet?"

"Of course not!" she replied quickly. "I would have screamed in pain!" and then she paused, before adding "Oh... right..."

"Yes... And actually, you were moaning Lily's name."

"Oh fuck..." Emily said in a very small voice. She then growled and said "And that's when you used the fact that I was wet to—"

"No Emily." Dustin sighed. "Lily opened the door and we just... well..."

Dustin, now consciously realizing that he was still inside his sister, said "Look. I don't care about all that. I should have pulled away. I'm so sorry. I'll understand if you don't want to talk to me ever again. I can't even being to apologize." Emily didn't reply, but she took a deep breath. Dustin finally noticed that she still hadn't asked him to pull away. He frowned, puzzled. Nevertheless, he said "Don't move... Let me pull out slowly otherwise I'm going to go crazy..." He began to pull back and involuntarily moaned with so much pleasure. "Emi, I'm sorry..." he said one more time, using her pet name. 

But to his surprise, Emily moved her hand backwards and grabbed his hip, saying "Wait..." 

Half out of her burning hot pussy, Dustin froze, not believing what he had heard. "Emi... Could you repeat what you said? I think my second brain made me hallucinate."

"Promise me you won't say a word about Lily and I," she said in a obviously nervous voice. 

"I promise," he replied instantly. "It's the least I—"

But she cut him off "Promise me you won't talk to anybody about what's going to happen now."

"I promise... Wait. What's going to—" Once again she interrupted him by pulling him back inside her with her hand on his hip. Dustin moaned. "Emi?" he asked, too stunned for more.

"Shut up brother... Just keep quiet and fuck me!"

His own hand, still on her hip, clamped down on her flesh and he pushed himself as deep inside her as he could. As if the sheer physical pleasure of his sister's pussy wasn't enough, the thought that she wanted him inside her made everything feel even better. He pushed hard into her, pulling her even harder against him. He slipped his other hand between them, then under her body to grab her other hip. In the spoon position, it wasn't ideal, but Emily was so lightweight that he managed it easily. 

And so, holding both her hips in his hands, he began fucking his own sister. He began by giving her slow and full length penetrations, shifting behind her to find the perfect angle. With a girl that has a small little ass like Emily, the spoon was actually a good position for very deep penetrations. And so in a matter of seconds, of less than a minute, he was plunging his cock inside her from the very tip down to the thick base like a well-oiled machine. 

Emily was perfectly silent and Dustin lifted his head to look at her face. Her eyes were squeezed tight, her mouth was wide open and both her hands were covering that gaping hole. It became clear that she hadn't breathed since he had pushed back in after their little conversation. Slowly, as he kept fucking her with those absolute penetrations, he felt her body arching gradually until she had given him an even better angle. Then she began trembling and Dustin wasn't sure what to do. 

After that, in a powerful shudder, Emily released the lungful of air she had kept inside. She took another deep breath after that and, to Dustin's surprise, stopped breathing again. Her body was covered in sweat by now and he could hear very faint and contained moans as he fucked her. Dustin didn't have much experience with girls, with only 2 girlfriends with whom he'd had sex, but this seemed very peculiar. 

Nevertheless, Emily seemed to be enjoying what he was doing even more than he was, so he kept it up. After the third repetition, Emily released her breath one more time and whispered "How the fuck can this be so good? How can your cock make me feel like I'm a fucking goddess?" 

Dustin grinned and replied, in a low voice "Because you are!" 

And then, taking her by surprise as she was about to reply, Dustin rolled her onto her stomach. He then spread his legs around her and, with the leverage of the bed, pushed himself as deep as he could inside her. When he arched his pelvis hard against her ass, he felt his cock reaching even deeper into his sister, touching her cervix. Once more Emily placed her hands on her opened mouth and did her best to smother a scream. 

Dustin shifted his upper body sideways just a bit and saw that her eyes were scrunched once again. For a brief moment he wondered if he had gone too deep, or too hard. But then he heard her croaking "Oh my gods..." in a voice that quelled his doubts. He then began pounding into her as she repeated that phrase over and over, clearly floored by the experience. When he reached under her for her breasts and squeezed them in his hands, Emily froze again for a moment before saying "It's not possible... I can't already be cumming, it's not—"

But she was. Feeling her slight body spasming under him, Dustin grinned when he felt his sister climaxing all around his cock. He then felt her hands sliding against his belly. After lifting himself up to look down, he saw that she was spreading her ass to let him go even deeper. She was now groaning with every thrust, as if each time he pummelled into her her ability to contain her cries of pleasure faltered. It was amazingly thrilling for Dustin. 

Eventually he felt her tremble beneath him and she released her tight little ass. Breathing hard like a machine she said "I want that cock in my mouth big brother. Lay down on your back." When he did, breathing hard himself, he watched as she placed herself on all fours above his legs. Her breasts, which looked even more like perfect half-spheres of flawless flesh, hung beneath her slim frame. So did her long thick mane of black hair. The panther was on the prowl again, and he was its target. 

His glistening cock twitched as her tongue touched its base before slowly making its way up to the tip. Soon Dustin learned that despite her proclaimed lack of experience, his little sister was a gifted cocksucker. She seemed to naturally be able to make her lips, tongue and both hands work together. As her mouth was enthralling the tip of his cock, her first hand was gently squeezing and releasing its base while her second one was gently caressing his balls. 

And all the while this magic was happening, she was staring deep into his eyes. Had any regular girl done this to him, he would have been profoundly happy. But experiencing all this while looking into the deep blue eyes of his sister... well, that was something barely believable. After having taking him as deep as she could for a long while, she pulled away gasping for air. A moment later she said "I want one more!" before climbing higher upon him. 

Dustin then watched as she pulled his cock straight up, guided its wet tip between her lips before impaling herself. His eyes were wide open as he stared in delight at his sister's body dancing upon his cock. Once more he realized that she was like fire, only alive when in motion. Emily twisted and turned, rotated her pelvis back and forth upon him all the while her breasts and their rock hard nipples swung around above.

At one point she lifted her knees upwards and slid her feet almost up to his armpits. Leaning back, she then placed her hands on his thighs and began fucking him in this new position. After a few moments, during which he was staring deep between her legs at her displayed pussy, Emily introduced him to the twirl. She rose up in twirls around his cock, making her entire pelvis rotate like a belly dancer's, before moving back down while rotating in the other direction. Dustin was flabbergasted. 

After a few of those twirls she fucked him straight up and down, pummelling his body with her ass. And then she graced him with a few more twirls. During one of them, Dustin said "Where the fuck did you learn that?"

After giggling and moaning, Emily replied "Lily and I enjoy watching porn, dear older brother..."

Dustin eye's opened wider, shocked once more by his little sister. Soon after that she returned to the classic cowgirl position and rode him hard. When she wasn't staring into his eye, Emily made her long damp hair whip around her body, alternatively covering her upper body with them only to reveal her nudity a second later. All of that, as well as the tight pussy ravaging his cock with so much pleasure, made for an entirely hallucinogenic experience. 

Without warning she leaned forward and he could feel her grinding her clit against him. Her surprisingly mobile hips allowed her to really push into him and soon she was gasping again until, after about ten seconds of absolute immobility, his sister exploded. In perfect silence, he had to give her that, she shook and bit into her forearm as she crushed her clit between their two bodies. 

After a very long second climax, as she was murmuring something Dustin couldn't quite make out, she collapsed on him. But as much as he wanted to wrap his arms around her and hug her tightly, he wasn't done. After pushing her knees down along his thighs, he grabbed her and turned her around. He then knelt on the floor next to the bed and turned her body sideways until he was kneeling between her legs, his cock resting against her pussy. "Again!" she moaned, seemingly only half conscious of what was happening. 

When he slipped his cock back into that tight sheath of a pussy, Emily grabbed two fistful of blankets as she bit on her lower lip. By then Dustin was holding her two slender legs in his hands, holding them in the shape of a great "V". His eyes darted like butterflies between her sweat covered face, her barely moving breasts and the uncannily beautiful sight of her shaven pussy swallowing his long cock with ease. Using her thighs as leverage, he mauled that forbidden pussy with a passion he had only rarely felt. He was fucking his sister's pussy and he was losing himself into her. 

At the very last instant, just as his climax crested, part of his brain rang an alarm: was she on the pill? He had no idea. So with heart wrenching effort he pulled out of that sweetest of pussies and masturbated until, seconds later, he exploded. He watched, transfixed, as his jets of sperm flew all over her belly, with a few reaching her breasts. 

By then Emily was laughing in euphoric bliss and soon he joined her. He released those long legs and fell upon her, squishing his sperm between their two bodies. Both of them were breathing hard at that point, but Emily grabbed his face and kissed him. Long and hard. 

After that, as they slowly moved into normal sleeping positions, their hands intertwined and they fell asleep like this mere minutes later. Dustin tried to figure out what all that would mean for the future, but sleep took him before he could even begin. 

Dustin was startled for a brief moment when he woke up the following morning. His sister Emily was lying in his arms, as naked as he was himself. And they had spent part of night having wild passionate sex. His involuntary startle woke her up and she opened her startling blue eyes to look at him. And smiled. He hadn't been sure about how she would feel this morning, but clearly she didn't have any regrets. 

They were all smiles as they busied themselves with the morning routine. It was strange how simple that was in a nudist colony: a shower and a comb was pretty much all that was needed. Many times, the two of them stared at each other and grinned like children. But they weren't children and what they had done together last night was profoundly immoral. When Emily kissed him on the cheek before leaving the room to join the rest of the family, Dustin grabbed her arms and kissed her lips. 

After that kiss stretched and stretched, Emily said "I'm glad you did that... I didn't know what you thought, or what you felt about us, about me..." The morning sun was now on her face, and her eyes shone like blue flames. Strange how he had never noticed that about her, those magnificent eyes. 

"Oh, Emily..." he whispered. "I couldn't put into words everything I feel about you, but one thing is clear: all of it is good. Great even. Even if you told me it would never happen again, I'd cherish that accidental night with you for the rest of my life."

Her answering smile was brighter than the sun for Dustin. "It will be our little secret." she said before kissing him again on the lips. "And about it happening again, we never know..."

She kissed him one last time and walked out of the room. Given that the long kiss had also awoken his erection, Dustin decided to remain in the room for a bit. He let himself fall on his bed and tried to order his thoughts about that accidental penetration and the very un-accidental sex that had followed. Part of him knew he should be feeling ashamed and dirty. Fucking your own sister? But instead of feeling shame, he was grinning at the thought of seeing her climax around his cock, her mouth open and her hands over it to stifle her screams of pleasure!

But Dustin shook his head: such memories wouldn't help him fight down his erection! Instead he focused on the idea of incest itself. It was morally reprehensible in just about all cultures of the world, his own included. Of course he had long admired his sisters' bodies: the twins, Erica and even his voluptuous mother had all fuelled his fantasies. Yet he had never thought that he'd actually do anything about it. And now he had. Accidentally at first, and then willfully. 

He had fucked his sister! Christ! And he couldn't tell anybody about it, obviously! Even when he gets back home in a week or so, he'll have to modify that story before he could share it with his closest friends. Dustin had a pretty good idea how even his closest friend would react if he told him he had fucked his sister! He slowly shook his head on the bed, sighing. Even if he had to take this secret to the grave, he wouldn't mind. And to think that Emily hadn't been closed at the thought of repeating the experience... Shit! Maybe tonight? 

Dustin stood up and tried to rid his mind of all the memories that flooded it. Thinking about the sight and the feeling of your sister's lips around the base of your cock, for example, wasn't conducive to ridding yourself of an erection! He stretched and did push-ups and sit-ups until, eventually, his erection was completely gone. Taking a few deep breaths, he went out and found his family, completely naked of course, sitting at a table in the dining room. Emily winked at him surreptitiously as he sat down. 

The rest of the morning, most of it spent outside in the sun, was uneventful. Uneventful, of course, only as much as a nudist colony can be uneventful Though the vast majority of women and girls that were not beautiful or sexy, Dustin was pummelled by countless images he'd love to photograph: two sexy girls throwing a frisbee, their large breasts swinging in time with their throws; three others, a redhead, a brunette and a blonde, with high ponytails jogging in the morning sun; a stunning black girl walking out of the lake, her body glistening with dripping water, her arms raised above her head to twist her long hair into a tight bun; three young girls dancing around a fire; one blonde girl with an amazing ass kneeling suggestively on the beach as she helped her younger brother building a sand castle. 

Sitting on an Adirondack chair wearing nothing but his sunglasses, Dustin was enjoying those many sights and thinking that life was good. His night with Emily kept popping up in his mind, but given the very public setting, he pushed those memories away. Out of nowhere his older sister Erica appeared in front of him. As she knelt, she looked at him and asked "Enjoying the view little brother?"

"What if I am?" he replied, remembering that she had teased him like this last year as well. He didn't mind, as she wasn't doing it to mock him. 

"Don't worry, I'll get out of your way quickly enough... I wanted—"

"No hurry, sis..." he replied. 

Erica narrowed her eyes, trying to see where he was looking. "Mischievous pervert!" she said in a whisper, but was smiling. "Looking at your sister like that!"

Dustin was grinning, enjoying this little game. "Well, if you're going to kneel in front of me like this..."

When Erica paused to look at him a moment, Dustin wondered if he had gone too far. He had never dared to say such things last year. She had had full control of her teasing. Not this year though. Not after Emily. Even if he didn't know how she would react, Dustin was more confident and intended to see where it would lead. After a moment, Erica stood up in front of him. It made her look even more beautiful, placed even more of her body in obvious display. Dustin didn't know if she had done it on purpose or not. "In any case, I wanted to know if you'd like to do the pancakes with me for lunch."

"Pancakes for lunch? Sure!"

"Great. Meet me at noon in our parent's room." The suite their parents had chosen for them had a private kitchen and they had taken to eat there instead of the common room. 

Before Erica left, she turned around and stood in front of him for a few seconds, seemingly looking for something. Her ass was about two feet away from his face. Had she done this on purpose? To show him her lovely round ass? Nah... Impossible! But when she finally left, she shot him a glance that confirmed that she had, indeed, been teasing him. "Oh the little devil!" Dustin thought. 

A few hours later the two of them met again in the kitchen. As they stood on either side of the small island, Dustin had to admit that there was something very sexy about cooking in the nude. Even at a nudist colony, even if his brain was slowly adjusting to seeing so many nude girls and women. And as he began preparing the sweet meal with his sister, Dustin couldn't help stealing glances at his sister's body. 

If the twins, beautiful as they were, hadn't received any of their mother's lavishly buxom body, Erica had certainly gotten most of it. She wasn't, at 23, quite as voluptuous, but it seemed that she was getting closer every year. She stood at about 5'3", which wasn't that tall even for a girl, but the rest of her body more than made up for it. 

Her breasts were really big, at least D cups, and they were really round and thrust forward almost impossibly far. On the net Dustin had of course seen plenty of nude girls with big breasts. But most of those big breasts, at least the natural ones, were simply wide and didn't reach so far from her torso like Erica's. 

Add to that the fact that Erica's nipples, in addition to being proportionally large, were quite pointy. That meant that the tips of those nipples, even when they were not hard, stood many inches in front of the rest of her body. And they danced! Oh how they danced! Even with a bra, Dustin had noticed how Erica's breasts moved a lot. As if they were naturally bouncy. But naked as they were now, and with Erica slightly bent forward over the counter, those nipples danced like intoxicated faeries! 

But Erica's breasts were not her only asset. She had a small and very high waist reminiscent of pin-up girls of the fifties. Low cut jeans didn't suit her well, but more classically feminine clothes worked wonderfully. That small waist and smooth belly led to her pussy and its long strip of hair. Less than two inches wide, that strip of light brown hair stopped right above her lips and was the only hair Erica had below her head. 

And those fleshy lips vanished between a pair of rounded thighs. Gold because of her tan, her legs were the most feminine pair of legs Dustin had ever seen. And when she turned around to get something from the fridge, Dustin was graced with her soft and generous ass. Erica had a large bubble ass that seem to defy gravity. And yet it worked. It worked very well in fact. When she walked—

Breaking into his reverie, Erica suddenly said "You know you don't have your sunglasses on, little brother..."

Dustin realized that he had the bowl of chocolate cream in his hands but he had stopped whipping it up a while ago. "Oh. I'm sorry sis... I was... I was..."

"You were staring at me like a damned perv!" she said, smiling and shaking her head. Dustin didn't know what to say. After a brief silence, Erica added "I don't mind Dustin... It seems strange to me to ask men not to look at women at a nudist colony. Kind'a hypocritical in fact."

"I agree!" he replied his predictable answer. "Just... Well, just don't tell Alexis about it, ok?"

"Tell him what?" she asked. "Tell my boyfriend that my little perv of a brother spent the entire week ogling my breasts and my ass?"

"And your pussy as well!" Dustin replied playfully. "Don't forget to tell him that!"

Erica laughed at his comment. "Don't worry Dustin. He didn't want to come here with us, and I have a feeling it's because he knew he would have an erection 24/7!"

"Well, it is a challenge!" Dustin replied. 

"Really? If that's the case, you're doing very well little brother. What's your secret?"

"I don't know. Every time I feel one coming, I just force myself to look away and think of something utterly non-erotic."

"Hmmm." Erica said. "Interesting. Are you doing that right now?" she asked, a naughty smile on her lips.

tilting his head slightly, he took a long breath before answering her "Maybe..."

Erica winked at him. "Ok, bring that chocolate cream. Well, looks like it's still pretty much a syrup!"

He walked around to her side of the counter, highly aware of their closeness. And of the fact that he was, indeed, trying to fight an erection. As he was about to put it on the countertop she reached for it. The flour on his hands and his nervousness made him lose his grip and the entire bowl splashed on her. More specifically: on her breasts. Erica gasped when the cold mixture hit her skin, but then looked down and laughed. "Now I suppose you're going to tell me that you didn't do that on purpose?"

Dustin would have liked to reply, but the sight of his sister's sumptuous breasts covered by and dripping with chocolate syrup froze him silent. The sight was impossibly erotic. All he managed to do was tear his eyes away. Erica was still laughing. "Help me find some paper towels," she said. 

"There are none!" he said after a few seconds. 

"Well then... there's only one thing to do!" his sister said. 

Erica then rubbed one of her fingers against her massive breast and licked the chocolate off of it. "Hmmm... Talk about a happy accident!" Dustin was staring at her, his eyes darting from her slowly dripping breasts and the smudge of chocolate that was now on her lips. He then closely followed her finger the second time she rubbed it against her breasts and swallowed. If the mere sight of the dripping chocolate had been arousing, seeing those massive breasts moving about as she rubbed them made it mindboggling. 

Erica, after smacking her lips a second time, said "Well, don't just stand there, give me a hand!" 

On reflex, Dustin took a step towards her. But he suddenly stopped when he realized that it would me that he would rub her breasts. "What?"

"I'm kidding! Damn it Dustin, get your head straight!" Erica said as she licked a third finger clean. 

Dustin walked back to the other side of the island countertop to hide his erection. There was no way he could win the fight against it anymore. A minute later, Erica had pretty much finished. Her breasts were still covered with streaks of chocolate, but there wasn't much more she could do with her fingers. Looking down at herself, she said "Hmmm. Looks like I'm going to need a tongue to finish this... Wanna help?" 

Dustin smiled but felt himself flushing bright red. "Stop teasing me Erica... You may be brown right now, but I'm pretty sure I'm red all over!"

She laughed again as she grabbed one of her breasts and brought it to her mouth, licking her nipple clean. 

And that was too much. Dustin groaned and turned around, walking away and cursing. He didn't know what Erica would say about that, but he hadn't expected her to say "Dustin? Are you hard?" Fuck! He had completely forgotten about why he had remained very close to the countertop! And now she had seen his cock. His head fell and he remained standing with his back towards her. "Oh..." she said after seeing his reaction. "I'm sorry Dustin. I'm sorry for teasing you. There are towels in the bathroom. I'll be right back. But please don't go anywhere. I don't wanna leave you hanging like that. Oh... Fuck. Sorry. Maybe that wasn't the best choice of words...

Two minutes later she came back in the kitchen and walked up to him. "Hmmm. Still hard? Why don't you sit down?" she told him. "I'm sorry Dustin. I just enjoyed teasing you about it. I guess I was frustrated about Alexis not wanting to come here. And for the reasons he gave me. You seem to be navigating this world of beautiful girls just fine!"

"Yeah! You know the image of the duck? Looks calm and peaceful above water all the while working like crazy underwater? Well, that's me." Dustin sighed. "And can you just admit that being a young male in this nudist family is much harder than in Joe's?"

Erica laughed, thinking about the fact that Joe's mother and sister, the family renting the two rooms nearest to theirs were mightily ugly. "Oh I do agree Dustin. You're doomed to live your life surrounded by four amazingly beautiful women! And nude women for a week!" she paused. "Look. I'm sorry. I'll stop teasing you. Alright?"

Dustin took a few deep breaths. "You know what? Don't stop."

"Are you sure?" his sister asked, surprised. 

"Yes. No. I mean, please stop teasing me willfully. But I'm also aware that I must learn to control myself. I still don't know why you like to do it, though."

Erica said "You don't know why? It's simple. I'm curious."

Dustin frowned, surprised by her answer, and surprised by the fact that Emily had pretty much told him the same thing. But before he could ask her about it, she looked at the clock and suddenly got up to hurriedly finish their lunch. "Come and help me! Erection or not! The rest of the gang will begin to worry and if they come here and see you with a hard-on, well..." And so they finished their pancakes, with Erica putting on an apron to cook them. Dustin sighed, realizing that seeing a very voluptuous women wearing nothing but an apron was extremely erotic! But he wisely didn't mention it. 

Later that same day, while the rest of the family decided to go to the swimming race, Dustin and Erica found themselves alone again. They went to his room, which had a better TV, and settled in for a quiet evening. About thirty minutes later, as they both watched a sports game, Dustin noticed that she looked at his cock pretty often. That made him think about what she had said regarding being curious. 

He found that surprising, given that Erica had had many boyfriends and was very active sexually. Even if didn't have explicit info about what that meant, she didn't make a secret of it. She had even taken up mom's role in educating the twins about sex life. What could she be curious about. The next time he caught her, he said "Well, looks like I'm not the only one getting an eyeful."

"Yeah well, I'm doing what you've been doing for the last few days," she replied flatly. 

"I'm not complaining Erica. I just can't figure out what you could be curious about."

"You mean because I've been with many partners?" she asked.

"Yeah." 

"Hmmm. I don't think I can tell you why," she said. 

"Oh come on! Here we are both naked, you staring at my cock and me being unable to forget when you licked the chocolate from your own breasts!"

Erica laughed, but still didn't want to elaborate. Grabbing the remote during the game's break, Erica scanned the channels until the screen was filled with a couple making love. It wasn't a porn flick, just a softcore sex scene, but the girl's breasts filled the screen as she rode her partner in cowgirl. For reasons Dustin couldn't figure out, his sister dropped the remote on the bed and watched the scene unfold. 

Sighing, Dustin said "What are you doing?"

"What? I'm just watching that movie. I like it," she replied, never taking her eyes off the screen. 

"Bullshit! What's the title?"

"Er, I don't know.."

"What's up with you?" Dustin asked, reaching for the remote. 

But Erica grabbed it first. Dustin stood up and tried to grab it again. To his surprise, Erica pushed it between her thigh and the sofa chair she was sitting in. She then crossed her arms and looked at him with a smile as the moans from the actress filled the room. "Think I'm not going to get it?" he asked her. 

"You certainly won't, as that would mean grabbing my ass," she replied confidently. 

But before she could even finish her sentence Dustin had reached down and slipped his hand around her round thigh, fishing for the remote. "What the..." she cried in surprise. 

"Ah ha!" Dustin said as he pulled his hand out with the remote. 

But Erica wasn't done. She stood up as well and reached for his hand. Dustin pulled his hand away and their bodies collided, her large breasts pressing against his chest for a second. That made him pause for a moment: Dustin had never touched breasts as big as his sister's. Sadly for him, Erica used his moment of disorientation to grab the remote. Laughing now but determined to get it back, Dustin reached for it with both his hands. 

Soon the two of them were wrestling like they hadn't done for a decade. The fact that Erica's breasts, ass and pussy were pressed or ground against Dustin's body didn't seem to matter for either of them. No more than the fact that his lengthening cock was slapping against her own body in return. They were both laughing, but neither of them was willing to let the other one win. 

At one point they fell on the bed and soon rolled to the ground. When Dustin found himself between his sisters legs in what was pretty much the missionary position, he finally realized that this was dangerous. But once again Erica took advantage of his hesitation and turned him over. Pretty much in cowgirl now. Dustin, throwing caution to the wind, lifted his hips and pushed her above his head. Erica ended up half on the bed, but she twisted and jumped back on him. By this time they were both flushed and giggling through the game. Finally, half sitting on his belly, Erica managed to pin his arms above his head with one hand and began ticking his armpit. Dustin, too stunned to give their wrestling match all he had, laughed and dropped the remote. But in that moment he stopped keeping his body twisted so that his cock was pointing away from his sister. 

When Erica, the remote proudly in her hand, sat back down on him, Dustin felt his cock impaling her completely. So for the second time in two days his cock had accidentally penetrated one of his sister's pussies. Erica then cried out a peculiar moan of mixed pleasure and pain. And contrary to what Emily had done last night, Erica jumped off and away from him a second later. Standing above him, she looked down at his cock, all glistening with her juices. She had her hand on her mouth and looked horrified. Which was, understandably, a very natural reaction for a sister after being impaled by her brother's cock. 

Reflexively she turned the tv off, the sound of the moans suddenly totally inappropriate. She looked back into Dustin's eyes, breathing hard and looking like a deer caught in headlights. "Erica, I'm sorry... I shouldn't have let you do that, I should have stopped you once I became..."

"Why were you hard?" she asked, her voice barely a whisper.

"Are you serious?" Faced with her silence, Dustin added, slowly, "Well... I know you were curious, but I think you have a pretty good idea why..." 

Erica looked at him as if she didn't understand a single word. Instead, her eyes were focused on his cock as if she had never seen one before. "What... What do we do now..."

Dustin, still on his back on the floor and still with a raging erection, was shocked to see that she was still breathing hard and still flushed. He'd had enough experience to know that it wasn't a flush from shame. It was lust. He took a risk and asked "Why were you wet?" Because she had been. A lot. 

"Fuck!" she said, finally tearing her eyes from his cock to look at him. "Because you have a fucking perfect cock! Perfect length, perfect girth, nice shape, perfectly straight... Christ!" she tried to regain control of her breathing, but failed. Haltingly, she added "In fact, when I saw your cock hard earlier, it reminded me of my favorite dildo. Shit!" she said before coughing nervously. "I don't know why I'm telling you this."

The siblings stared at each other for a long moment, with Erica standing right above his cock. After a long moment, Dustin said "Where's the remote?"

Erica was startled by this question. She nonetheless frowned and grabbed it from the bed. "Here."

"Give it to me," breathing just as fast as his sister was, he grabbed it and placed both his hands above his head on the floor. Just like earlier. 

The two of them stared at each other again for a long minute. Dustin's cock was twitching, overfilled with blood. He was totally unsure of what Erica would actually do until, finally, she took a deep breath and released it in one go as she jumped on him. In silence now, they feigned to wrestle again and soon Erica grabbed the remote. Saying a fake victory "Yes!" in a whisper, she then sat back once again and impaled herself on her brother's cock for a second time.

This time though, she sat back up and let her entire weight rest on him, pushing his cock even deeper than the first time. The siblings both moaned at the same time and Erica repeated her "Yes!" After closing her eyes, she opened her mouth and simply remained there, enjoying her brother's cock. Soon she placed her hand on her head before grabbing a fistful of her her hair on each side. 

Beneath her, Dustin was just as transfixed by the wonderful pussy around his cock, by her breasts offered on a silver platter and on the notion that he was fucking a second sister. He sat up and gathered his legs beneath her. He then wrapped his arms around her and pushed her backwards before diving for her breasts. When he felt his older sister's nipple in his mouth, Dustin shook as he feasted. 

He kissed and sucked on it before licking his way all over his sister's breast. Soon he jumped to the other and he repeated the process. Through all of this they were both silent but he could feel her pussy spasming repeatedly around his cock. After a while he pulled back and stared at the breasts he had been fantasizing about most of his life. They were glistening with his saliva and the two aureolas were engorged with blood, their nipples projecting outwards enormously. 

Laughing crazily, Dustin then plunged his head between them and felt Erica pushing her breasts around his face. He was out of breath, completely flushed and grinning like a fool when he pulled back out. "You have no idea how long I've been wanting to do that!"

"Oh, I think I do!" Erica replied, laughing with him. "You and every other guy on the planet! But now it's my turn to have fun!"

With that she pushed him back down, shifted her knees on the floor and began riding him like a bucking bronco. If he had taken Emily pretty roughly yesterday, pounding into her from behind, he was now on the receiving end of intense lust. At first he had placed his hands on his sister's hips, but soon he realized that Erica was in control. He placed his hands under his head and stared, in awe, at her body as it rode his. 

Her large breasts, being rocked around wildly by her relentless rhythm, drew his eyes at first. Obviously. Her large pink aureolas, all puckered because of her arousal, threatened to hypnotize him. Soon though, his eyes left those large orbs of sweet flesh and looked lower to her rounded thighs. And soft, feminine belly. And that welcoming pussy, stretched as it was around his shaft. 

As he focused on controlling his own pleasure, he saw and heard Erica's excitement growing. Like her younger sister, Erica seemed to really like this cowgirl position and soon enough Dustin saw that she was on the verge of a climax. "You're so fucking beautiful!" he whispered. Erica moaned at his words, laughed breathlessly and, twenty seconds later, exploded in pleasure. 

Dustin had never seen a girl climax for so long before. Not even fake orgasms in porn movies. He didn't know if she was having multiple orgasms or was simply sustaining a single one for very long. Eventually, either because the climax was fading or because her body was exhausted, she slowed down, sweat dripping from her chin and both nipples. 

As he caressed her thighs, arms, belly, breasts and face, Dustin felt that she was covered in sweat. To his surprise, she didn't really stop riding him. Instead, she just slowed down a lot. As she was gathering herself and quieting her breathing down, she opened her eyes and laughed. "That, sweet sister, was extraordinary!" he said. 

"Thanks!"

"But... Can you now tell me why my cock was so... well, was such a..." his words trailed off.

"An aphrodisiac?" she supplied. 

"Yes."

"Well, I've been with four guys before you. Before my brother!" she cried, shaking her head in disbelief. "And would you believe that they all had strange cocks?"

"Strange cocks?"

"Yeah... The first one was crooked to the point that it could barely fit inside me. The second one had a disproportionately huge bulbous head that was rather painful. The third was probably the most normal, but the guy was a precocious ejaculator. And finally, the fourth, Alexis..." Erica paused and looked at him with a serious expression on her face. "Swear to me you're never going to repeat this."

"I swear!"

"Alexis... Oh. I love him a lot. But..."

"Strange cock? What's wrong with it?" Dustin said, trying his best to follow this strange conversation as his sister's pussy was still writhing around his cock.

"Oh, it is straight, nicely proportioned with a beautiful head. But it's only four inches long when fully erect... Which explains why he didn't want to come here." She paused and sighed. "And so last year when I saw your cock, erect once or twice... Well, I was pissed. The only guy that I couldn't... well that I couldn't fuck had a perfect cock."

"And then you found a way to fuck me, all the while making me believe that it was an accident."

Erica was stunned by Dustin's words, but before she could do anything about it, he rolled her off of him and guided her to a new position. She was on her knees, her upper body on the bed and Dustin was kneeling behind her. Even though his big sister's ass hadn't fuelled his fantasies as much as her breasts, he now realized just how wonderful it was. Using his thick cock, he playfully slapped each of those round cheeks a few times, watching her flesh bounce. 

Dustin then spat a gob of saliva on his cock and said "Get ready to be fucked again by your brother's perfect cock!" Erica began to say something, but it turned into a groan when he pushed himself in. Seeing those round buttocks pressed against his upper thighs and his cock buried into her pussy made his head spin. His appreciation for curvy, nicely rounded ass increased significantly during his first time with Erica. 

As he pounded into her, watching that upturned ass meeting his thrusts, he abandoned himself and gave her all he had. Given that Erica was only moaning louder and louder despite the fact that she had bit into a huge fold of the duvet, Dustin kept driving himself harder and harder. He couldn't believe just how hard he was fucking her and how wild it was making her. After gasping in pleasure and because he needed so much air to sustain his rhythm, he felt his balls contracting. "Can I..."

"Yes! Don't pull out!" she replied, cutting him off. 

If yesterday night had been his first time inside one of his sister, this night would mark the first time he had cum inside another of his sisters. It was utterly surreal, but all he could think about right now was his intense climax. He came so much that sensations of his cock rubbing inside her pussy changed! He was holding on to those lovely rounded hips of hers as he pushed and bucked against her, filling her with his incestuous sperm. 

Eventually Dustin pulled back and fell against the other bed, his heart pounding as quickly as he had pounded Erica's pussy. She soon jumped on the bed next to him and hugged him hard. The two of them spoke for a while before getting up and taking a shower together. The last thing they did before parting was laughing about not having been caught, which had certainly been a possibility. 

***

Little did they know that, in fact, they had been caught. By their mother. When Erica fell on Dustin's cock for the first time, she had heard her strange scream. She opened the door between their room and saw her daughter sitting on her son's cock. It froze her in her tracks. Her two children, in any other situation, would have seen the door open with her standing there. But they were both too shocked to notice. 

And so Tessa had partially closed the door but had remained, fascinated and appalled by what she was seeing. When, less than a minute later she saw her daughter mount her own brother again, she had stood there, unable to tear her eyes away. And soon her consternation had given way to utterly improper pleasure, and by the time Dustin was taking her daughter's pussy from behind, Tessa had climaxed all over her hand. 

As she was walking back out to rejoin the others, she felt like an entirely new world had just opened up to her. It wasn't right for a mother to think about her son's beautiful cock in that way, right? Right? But that decision will have to wait for another story.