Around the time Susan and Suzanne went outside to swim in the pool, Katherine was in her room writing in her diary.
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Dear Diary,
You will NOT believe what just happened! Aunt Suzy did it! She really did it!!! She sucked Brother's cock, and not just once, but twice!!!! I knew it was going to happen after all the handjob help she'd been giving him, but still, to actually HEAR it all go down... I still can't believe it!!!!
Oh yeah, did I mention that I eavesdropped on the whole thing?! Because I did! I had to make a show of going up and down the stairs and leaving my door wide open, because I could tell that Mom totally wanted to eavesdrop too! But I beat her to it! She was too afraid though, knowing that I was right there across the hall. And she missed out, big time, because what I heard was WAAAAAAY better than any porno film! And that was just from the SOUND! Good grief! Aunt Suzy slurps so loudly and passionately, I swear you'd think there were three of her in there, at least! So sexy! I was sooooo tempted to open the door and peek in just a little bit, but the darn door was shut tight. I couldn't take the risk. DAMN!
But who cares? The sound was more than arousing enough! I put my ear to the door and heard EVERYTHING! I must admit, just now I had a pretty rockin' masturbation session from thinking about what she did! Even though it was her, in my mind it was ME the whole time!!!! It was super scary, knowing that Mom could come up the stairs at any moment, so I had to keep an ear out for her and refrain from touching myself until I was back in my room. But that made it even more exciting!
//
Katherine was going to write more, but her window was open and she was hearing some strange sounds coming from the pool area. She'd ignored that for a couple of minutes, as she was busy writing, but then she went to the window and saw Susan and Suzanne standing in the pool in bikinis. That kept her attention, especially since her mother never, ever wore a bikini. Even though Katherine was too far away to hear what they were saying, she had a great view. She particularly appreciated the fact that their huge racks were just out of the water. She kept watching all through their shocking oral play with the banana.
That got her worked up all over again. She wound up playing with her pussy while she watched them take turns fondling and sucking the banana. Although she was frustrated by still not being able to hear what they were saying, this time she didn't really need to, because the visuals with the banana said it all.
Eventually, once Susan and Suzanne went back into the house, Katherine had her own silent orgasm from what she'd just seen. Then she resumed her diary entry.
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Diary, hold your horses! Stop the presses! You will NOT believe what I just saw in the backyard! I saw it, but even I can't believe it! Mom and Aunt Suzy basically made love to a friggin' BANANA!!!!!! I just know that was a stand-in for Brother's big cock! Since it happened JUST after Aunt Suzy sucked him off, I'm POSITIVE she was demonstrating to Mom exactly what she did to him! Even though it's driving me crazy that I couldn't hear them talking, there can be no doubt about it!
//
Katherine went on to describe in detail what she'd heard Suzanne do in Alan's room as well as what she called the "banana incident" by the pool. She was stunned by what that indicated about her mother's desire for Alan, and she wrote about that at length. Her perception of Susan as being essentially sex-less and prudish was shaken to the core.
She concluded:
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I tell you, things are happening around here. Big things! Life-changing, heart-stoppingly exciting things! The question is, am I just going to be a bystander, or can I join in the fun?! The way things are going, even my super-prudish mom is going to be playing with Brother's big boner before long. Why not me too?! What's my excuse for sitting on my hands?
I'm sure Brother's attention is focused on them right now. They're so busty and gorgeous that it makes me want to cry. How can I compete?! But I'm the one who's been in love with him for a long, long time! Sure, I've been flirting with him some lately, but I'll bet he still has no clue how I really feel about him.
It's time for me to strike with some kind of dramatic, bold move! I've got to capture his attention fully in a way that can't be ignored or denied! I don't know what it is just yet, but I know I've got to do something!!!!
//
She was so intent that she actually dropped her pen and clutched both fists in the air in determination. She spent a lot of time after she finished her diary entry thinking through different possible scenarios and trying to gather her courage.