Cindy lifted her legs and closed them high about her brother's back, her naked little ass bouncing, her stomach, churning furiously. Kathy was able to see his cock thrusting into her cunt an inch above the tightness of Cindy's asshole. She saw Robert's balls beating at Cindy's tight, sweet ass cheeks, and her cunt throbbed hotter than ever. She knew she was going to come, and probably before they did.

Her tits were almost painful now, her nipples feeling as if they were going to burst. She did not know she was whimpering and moaning softly in desire, nor did she know that the expression in her dark eyes told of her inner desire to be fucked, too.

Robert's naked ass bunched up as he thrust hard into his sister's eager cunt. As he stabbed up and down, Cindy churned her hips violently, grinding her hairless cunt in a frenzy of ecstasy against him.

"Oh, golly, Robert!" Cindy squealed. "I'm about to come! Come with me, Robert! I wanta feel your cock coming up my cunt! Ooohhh, come in my pussy, Robert! I want it… want it coming in my hot cunt!"

Cindy wailed loudly, ramming her crotch up tight and grinding furiously as her brother increased the thrusts of his cock. Then Robert went stiff atop his sister, his cock deep inside the slippery heat of her pussy. He grunted and came.

Kathy was unaware that she, too, had grunted. Her cunt went into tight spasms that shook her body, making her pointed tits bob. She was straining against the ropes, her mouth open and her eyes glazed.

Robert pulled his cock free of his sister's tight cunt and sat up, looking at Kathy. Cindy, too, turned her head toward Kathy. Cindy continued to lie there, legs once again spread widely. Kathy saw her pink cunt twitching, the glistening of her brother's come juice seeping from it.

"Don't tell us you didn't come, Kathy," Robert said. "That would make anybody come."

Cindy giggled again, swung her legs off the couch and got to her feet. Again she cupped her hand between her legs. She came to Kathy and pulled her hand from her cunt. She smeared her brother's come juice on one of Kathy's pointed tits.