Cindy gasped, then giggled wickedly. Robert grunted as his cock thrust in and out of Cindy's gripping, wet pussy. Kathy moaned with excited delight as she sucked vigorously on Cindy's hard little nipple.

Kathy's tongue swirled and lapped excitedly as her hot lips sucked hard. She twisted and writhed her ass on the bed, wishing they would turn her loose so she could touch them, feel them, play with them. Her cunt was squeezing and flexing, becoming tight. Her clitoris was swollen with tingling pleasure.

"I gotta come!" Robert shouted. "I just gotta come!"

With her tit inside her mouth, Kathy felt Cindy gyrate her naked little ass for her brother. Cindy was mewling as her ecstasy steamed along with his. Kathy knew they were both about to come, and she sucked harder on Cindy's sweet, rigid nipple, her lips wide and almost every bit of Cindy's creamy tit inside her mouth. She wasn't sure it was her imagination or not, but it seemed as if Cindy's body trembled.

Cindy wailed with ecstasy and her small body went stiff above Kathy. Robert slammed his cock hard up his sister's cunt, gushing thick come juice into her. Cindy remained on her hands and knees, shivering, as Robert pulled his prick free and sat on the bed. Kathy released the girl's nipple and turned her head. Robert was sitting with his back against the headboard, his legs spread. His balls hung between them, and his cock glistened wetly.

Finally Cindy sat back, leaning with her arms behind her, one leg above Kathy's head, the other resting on her shivery stomach. Kathy gazed front Robert's cock to Cindy's cunt. Cindy's tight young cunt was puffier than before, and the tip of her succulent clitoris peeked from the pink folds. The golden fuzz grew only at the top of Cindy's pussy, with none along the sweet lips.

Kathy was very excited. She twisted her head from one to the other, her dark eyes smoldering with desire. Robert's cock looked beautiful to her, and she found herself wishing he would shove it into her cunt and fuck her. Wasn't that why she had returned to sit with them? Or was it because she found she enjoyed being humiliated this way, tied up in a helpless position and forced to watch them fuck, forced into this position and ogled by their hot young eyes?