Rachel was a strict and straight-laced step-mother who demanded absolute perfection from her step-son Kenny. Her big ambition was for him to follow in his late step-father’s footsteps and become a doctor. To this end she made him study hard and refused him the distractions of the internet and of socializing with other people. As a result Kenny grew up to be a very bookish and shy young man. In fact, Rachel had caused her step-son to be so inexperienced, regarding matters of sex and the human body, that her plans for him ended up backfiring. She was utterly horrified when Kenny got a D in biology. How could he become a doctor with grades like that? Panicking, she immediately shipped him off for some specialized tutoring from her step-sister, Dallas – herself a respected professor of biology. Dallas was the opposite of Rachel. She was permissive and free-spirited. Straightaway she identified Kenny’s problem and determined to teach him about the birds and the bees in a very hands-on manner. Dallas was far too open-minded to be bothered by the prospect of becoming her own nephew’s seducer.
Hour by hour, day by day, she initiated him into the world of sex. She began by teaching him the names for the parts of the body, then went on to jerk off his cock – showing him how he could make it hard and get it to cum. Later she spread her legs and invited him to finger her pussy and explore it. Kenny was a fast and enthusiastic learner. He did an excellent job of following his aunt’s advice on how to lick her out. Soon the young man was ready to experience having his cock sucked. He was almost overwhelmed at the new sensation – of having his aunt fuck her mouth up and down his length again and again. After giving him his first feel a woman’s tits, Dallas led her nephew into the living room. There she got to him to strip off and lie down on the rug. It was time for him to learn about procreation. Once again Kenny proved an apt pupil. In no time he knew just how to use his cock on his aunt. He fucked hard up into her, making her moan while she rode him on top. Dallas then got on to her back to show Kenny another position. With her legs spread wide apart and pushed far back, Kenny was able to fuck her deeper than ever before. He put all his youthful energy into showing her what he had learned. It was clear that he was doing a good job from the wild noises Dallas was making. She could not have been happier with her young nephew’s fucking performance. At the end he pulled out and shot a huge load of cum over her stomach. Following a few more weeks of solid fucking with his aunt, Kenny was a changed man. He was hip, confident and flippant. Gone were the glasses and the stutter. Rachel was stunned at the difference in her step-son when she came to pick him up. Visibly suspicious and full of disapproval, she demanded to know what had taken place between Kenny and her step-sister. Dallas decided to answer with a demonstration. She led Rachel and Kenny up into her bedroom. There she lectured her step-sister for being such a stuffy and domineering step-mother – instead of the loving and sensitive one that Kenny needed. A moment later, Dallas pulled out Kenny’s cock and started jerking and sucking it. Rachel’s anger suddenly changed to profound shock. She could not believe her eyes. Such flagrant sexual conduct was shameful enough, but this was forbidden act involving an aunt and her nephew. Even worse: the nephew was her own step-son! A confused Rachel tried to flee the bedroom, but she discovered Dallas had locked the door after them. In she paced up and down, trying to ignore Dallas sensually blowing Kenny. Gradually, however, a strange curiosity came over her. She found herself sitting next to her step-son and her step-sister on the couch, looking at them with confused feelings. Long-buried passions were beginning to stir in her. When Dallas grabbed her hand and wrapped it around Kenny’s big cock, Rachel found herself unable to let go. Soon she was willingly jerking if off. All at once the widow was fired up with sexual need – a lifetime of inhibition fallen away. She slipped out of her skirt and allowed her step-son to unbutton her blouse to fondle and suck on her huge tits. Moving on to the bed with him, she stretched out and sucked his cock with the sensual loving that only a step-mother could provide. For a long time she enjoyed taking him deep into her mouth while he held her head and pushed down on it encouragingly. Along with her step-sister, she took turns leisurely sucking and jerking him off. Then she laid back, parted her legs, and invited Kenny to please her exposed snatch with his tongue. The young man performed the act with great skill. Rachel moaned and writhed. Giving way to dirty talk, she voiced her disbelief that her step-son was licking his own step-mother’s pussy. Not long after, Kenny was finger fucking his step-mother and his aunt together so as to make them wet and ready for the main event. He started out by taking on his step-mother – the once prim and bossy woman who was now a raging slut. He was delighted to finally slip his big cock inside her hot, tight pussy. Rachel went crazy with pleasure as her step-son pumped her in the missionary position and her step-sister played with her big tits. It was her first cock since the passing of her husband. Wickedly, she even mentioned that it was bigger than his. The torrid fucking went on until Rachel came hard. Next up, the young man licked out his aunt, then let her and Rachel tongue each other’s pussies in the 69 position. That done, he moved in to give Dallas a deep fucking on her back – followed by one on her hands and knees. Finally, Kenny pulled out and blasted his hot cum straight in to his step-mother’s open mouth. Rachel gladly took up every drop before exchanging it with her step-sister in a tongue-twisting kiss. In the aftermath, the Rachel felt a pang of guilt at what she’d done. But even her sin would be worth it if Kenny succeeded in becoming a doctor. She and Dallas determined to make sure of that by giving him plenty more educational fuck-lessons in the future.
Format: mp4
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aincest – 29080 I Got a D in Biology.mp4