Sue can't resist

Ann screamed as Ben felt his cock stretch another inch. "My God! He's getting bigger! Aaaah!" she shouted as she melted into another huge orgasm. When Ben looked over at his sister, she had started rubbing her crotch and pinching her nipples from watching him pleasure her friends. Her eyes were riveted on his large organ as he withdrew it from Ann's weeping pussy. It had grown to at least ten inches long.

Without a word, she practically ran over to the bed and pushed Ben backward into the mattress. He was very surpirsed, even though he had just been wishing for this; there was a big difference to him between fantasizing about fucking his sister and actually getting to do so. His **** taboo kicked in. She straddled his hips and leaned down, capturing his mouth in a deep kiss, her cunt rubbing up and down on his enormous cock. Her tongue pierced his lips and twisted and turned around his; then she shifted her pelvis and popped his cock head into her slit. She moaned into his mouth. Her sudden actions left him shocked and aroused at the same time; this was his sister after all, but she was hot. Ben looked over to see Jen licking Ann's puffy lips and shoving her tongue deep into her wet pussy.

Sue yelled, "I don't care if you are my brother. I've gotta have that cock!" as she started pushing herself down on his meat, and she broke the kiss to groan loudly with her eyes closed. She kept bobbing up and down, swallowing more and more of his cock with each stroke. Intense feelings of pleasure radiated from his cock to the rest of his body, cancelling his sense of wrongness in the situation.

Finally, she had him buried completely in her twat, and she straightened up and used her legs to lift her body up and down. Ben watched her tits bounce nicely in front of him, so he reached out a grabbed them, fondling them hard. Sue moaned and then shrieked as she hit bottom again. Each time she bottomed out, a shriek escaped her lungs; he must be striking something good inside her cunt. He shifted his eyes and watched his enormous stiffness sliding in and out of her glistening pussy, a very erotic sight.