Gary pulled away from his sister and propped himself up on one elbow, watching as Brian slipped between his sister's legs. Tanya spread wide and grabbed Brian's cock with both hands and shoved his cockhead against the entrance of her pussy. She moved his cock around and around, his throbbing gland popping in and out of her cunt, rubbing against her clit.

"Oh, that's nice!" Tanya moaned as his cockhead excited her clit and made it throb with passion. "Fuck me, you bastard!"

Brian lunged his hips forward violently, and in one movement slammed his cock all the way into her cunt. His balls slapped against her asshole as he did it, and he could feel her little shitter throb against the hairy flesh of his nuts.

Tanya yelled out as she felt the monstrous piece of meat bang into her slit, slamming up against her guts. The mixture of pain and pleasure combined in an electric jolt that sent her body quivering with ecstasy. She tightened her already stretched pussy walls, latching onto his cock like a vise, as she gasped with the sensation.

She pushed him over on his back, and still keeping his cock deep inside her, straddled his waist. She began pumping up and down, moaning with delicious pain, as his cock slipped against the tender, tight insides of her cunt. She sat down on his balls and squirmed her ass around and around, forcing all of his cock to churn and twist inside her pussy.

"Oh, baby!" she wailed, feeling his hard cock press into her backbone. "Make me hurt, you bastard, make me hurt!"

Brian raised his upper body and placed his mouth on her tits and chewed them with his teeth, as she buckled with the pleasure. She thrust her tits back and forth, burying them into his face, while he chewed on them, her hard nipples slipping in and out of his mouth.

"Bite them!" Tanya screamed out. "Bite my tits hard! Hurt me!"

Brian clamped down on her tits, squeezing her soft skin between his teeth, until he left marks, and still she wanted him to do it harder. She grabbed him by the back of his head and forced his head against her nipples with all her strength. She screamed out in pain as Brian took her tits between his back teeth and chewed them like he would a steak.