Chris watched his sister's expressions turn from innocence to pure lust. "Oh Chris, I can't hold back any more. I'm yours Chris. I'm your slut," Cathy spoke to him as she lowered her lips to his and sucked insatiability on his tongue. Cathy arched her back slightly and without warning, forced her cunt down onto her brother's cock. A muffled scream echoed in the chamber between their locked lips. Cathy's hips gyrated, front to back, side to side while moving up and down on her brother's huge cock. She pulled her lips from her brother's mouth, threw her head back as she screamed with delight. "Oh God Chris, it feels soooo goood like this! I can't stop fucking. I can feel you all the way inside me, all the way. Fuuuck it feels so good! Am I a good slut Chris? Is your teen sister a good slut?" Cathy asked her brother as she moved on and off his cock. "Just don't stop Cathy!" her brother unanswered. "Don't ever stop sis. You’re so hot. So tight," Chris half mumbled and half spoke. Chris suddenly realized that he was on the verge of coming in his sister's pussy. "Wait! Wait Sis! Pull off me, quick, pull off now! I'M COMMMIIINNNGGG!!" Chris shouted as his sperm surged through his cock and into his 16-year-old sister's unprotected virgin cunt. Cathy felt her brother's cock heave, as his hot sperm splashed against the inside walls of her cunt. The sensation of her brother's cock, pulsing as it delivered its load, and the feeling of his hot sperm packing her stretched cunt, took Cathy over the edge and she came along with her brother. Deb watched her two oldest children enjoying each others bodies and could not remember why she thought it was a bad thing. She wanted her children to feel indian pleasure. To love each other. To experience each other. Jeff turned out the light to the room where the twins were now basking in the afterglow of their first sex. He left the sound on so they could hear if the twins decided to do it again. Jeff had already turned off the machines as soon as Deb had succumbed and her son and daughter had started fucking each other. No need to waist the aphrodisiac when nothing could stop what was going to happen at that point. Jeff reached down between his sister's thighs and released the pressure of the bulb amateur inside her cunt. It fell to the floor without much noise. Deb's cunt was still gaping open from the stretching it had received and Jeff put two fingers in the entrance to her cunt, barely touching his sister at all. "You did a good thing sis." Jeff held up the silver dog dick and asked her again. "Now beg me to put this in your ass little sister. I’d gained something, but I shed a tear over what I’d lost on the way. "Shit, in this position I can't even rub my pussy lips together," Deb thought as she waited for her brother to return. His tail lashed with growing excitement. I noted that both women were wearing sports bras over their average sized tits and both were wearing leggings. And please, please do not hate me when you indian see it." When she teen left the room and walked down the hall, Karen walked up behind her and touched her shoulder. “What; I don’t understand.” I replied. So he starts telling her about the bra shopping, while she sucks his dick back to hardness. “I’m going to cum, get your faces together.” We knelt down, our faces together. And her hair was a matching blue! “That story you were telling me, about you and Tera having that race.” I said, leaning back, “I’d like to amateur hear how it ends.” But then, whenever you’d talk to Brian himself about it, you’d get this totally different story.”