But while the trick worked, there was a cost: Jack and his penis was temporarily overwhelmed. He was panting like he'd just run a 10K race, and his boner was in a painfully sensitive state.
Linda saw that, and so she tried to delay leaving her spot between his legs, but Nicole was so eager she practically had a hissy fit. The foxy, big-titted daughter was too cock hungry to see how physically wasted her father was.
As soon as Linda moved out of the way, Nicole moved right in. Had she been in a non-horny state, she would have had serious issues about the perceived sinfulness of titfucking her father. But Linda had cleverly avoided mentioning the idea for months, and then introduced it to Nicole when she was so horny that she didn't know up from down, so she didn't think about that at all. Linda wisely didn't bring up the issue, and Jack was too winded to say anything anyway.
Nicole followed Linda's instructions to the letter, and soon had Jack's boner smugly pointing up through her cleavage. She was beside herself with excitement.
She lifted her tits up experimentally in just the right way, and then exclaimed, "Look! I made Daddy's cock disappear!"
Sure enough, every last inch of his throbbing fat pole was covered with her tit-flesh.
Jack's eyes bugged out, despite his total exhaustion. HOLY SHIT! Look at that! The glory! I never thought I'd see that with my own eyes!
Linda was stalling for time until Jack could recover, so she tried to fill the time by lecturing Nicole a little more. "Girl, your tits are bigger than mine, as we both know. I'm not sure I can do that. Now, I want you to take this dead seriously. The bigger your tits, the greater your duty to use them to serve your daddy and his cock. Your tits are there for your daddy's pleasure. I expect you to become a titfucking expert.
Can you do that?" She said this like she was a concerned parent lecturing her to do better with her algebra.
Nicole nodded gravely. "Wow! That's an awesome responsibility, but I'll try my best!"
"Good." Linda could see that Nicole was fit to burst, and she couldn't stall any longer. So she said, "Okay, I think you're ready to start the titfucking. Take it slow at first. Just slide your tits up and down a little bit like you're rubbing them together."
Nicole started doing just that. She asked, "Like this?" Linda nodded. "Very good."
Nicole suddenly squealed erotically, "Holy Mother of God! It tingles! I'm getting the most delicious tingles where his cock is rubbing me!"
Jack looked down at his stiffness nearly totally engulfed in his daughter's tanned melons, and just groaned. It wasn't like Linda's little cock squeezing trick had totally reset his need to cum - he still was rather close. And the sight of his pole fully surrounded by his daughter's tanned, twin globes was just about the most arousing sight he'd ever seen.
And as if that wasn't enough, Linda stood right behind Nicole, bent over with her hands on her shoulders. Not only were Linda's big boobs hanging down, they were literally draped right on his daughter's head.
He knew Linda had taken that position just to arouse and tease him, but it was working just the same.
Nicole had learned her titfucking lessons well, and soon she was doing it nearly as well as Linda had been. She even used the exact same basic repeated "slide, slide, slide, quick jiggle" style. She also had boundless energy, and absolutely no intention of stopping.
After a minute or two, Linda said, "Okay, you've got it so far. Now, while you keep doing all that, breathe on it."
Nicole took a couple of heavy breaths.
But Linda complained, "No, no, no. From close up. VERY close. Tilt your head and breathe on it from so close that you could touch it with your tongue."
Nicole tilted her head some, but said, "But I don't wanna touch it with my tongue. That would be wrong!"
"Well, just get close!" Linda harangued. "That way, you can not only drive him wild with your breathing, but you can take whiffs of his heady, masculine scent."
Nicole liked that idea, and got as close as she dared. She sighed happily as she sniffed. Linda said encouragingly, "That's the smell of sperm. That's the smell of love!"
Nicole sighed dreamily, and kept on with her breathing, sniffing, and titfucking.
Linda made a point about the breathing because she wanted Nicole to get used to having her lips that close to Jack's dick. She assumed, correctly, that that would greatly weaken Nicole's resolve against cocksucking. Sure enough, after another couple of minutes, Nicole grew a bit careless and found the tip of his erection occasionally brushing against her face. Since she kept her mouth wide-open most of the time because of her constant breathing efforts, his dick usually bounced against her lips. It looked like it was ready to slide inside her warm mouth at any time.
She kept right on relentlessly for several more minutes until Jack was back at the cusp of climax. She didn't say a word, because she was intently listening to every sound coming from her father, trying to figure out from his grunts and pants which of her titfucking moves he liked the best. Plus, she was busy experimenting with her breathing, varying up the power, distance, and location of her breaths to add more stimulation to his excited pole.
Her mouth was usually only an inch or two from his cockhead, thanks to all her breathing efforts. As a result, she was constantly tempted to stick her tongue out and lick. It was becoming increasingly difficult for her to justify that what she was doing was morally okay, but if she simply got her tongue involved too, that was not okay. Since she didn't want to stop what she was doing for the world, her opposition to cocksucking was eroding by the second.
However, Jack gave in before her resolve on that could be truly tested.
He didn't have much time to warn her when the time came, because one of her quick jiggle moves suddenly took him past the point of no return. He was only able to say, "Cumming!"
But Linda, as usual, was right there, trying to push her friend into even more wanton sexual behavior. She shouted, "Quick! Pull back and stroke it, so he can cum all over your face!"
He'd already shot some cum up towards her neck and chin, but she moved fast and aimed his next squirts directly at her face.
Nicole still was squeamish when it came to most bodily fluids, but she didn't think of cum as a bodily fluid anymore. It was a physical manifestation of her father's love, and, as such, she couldn't get enough of it. She gladly tilted his penis this way and then to help make sure it covered her thoroughly.
Every second was precious, and Linda kept shouting, "And your tits! Make sure he cums all over your big tits too!"
Jack had a bad habit of thinking about his wife when he came, because he had to make a quick mental check to make sure she wasn't in hearing range. Realizing she wasn't, he let out a great guttural, animalistic cry. "AAAARRRRAAARRGH!" It sounded like he was being torn in two.
Totally dead to the world, he flopped back onto the bed as his climax petered out, since there was nothing holding his back up.