Lisa stood up in breathless excitement, watching her son lift his ass up, then plunge downward. His balls smacked upon his sister's wiggling ass softly and Ginger began to whimper as she thrust her ass up to meet her brother's cock. Toby wrapped his arms about his sister's waist, then clasped the small cheeks of her ass. He began to stab his cock in and out of Ginger's cunt swiftly.

The wet sounds drifted to Lisa, who felt as if she was about to fall. Her legs were very weak, shaking, and she clung to the doorframe, afraid she would fall. Her eyes blazed at her son and daughter, her own cunt steaming and pulsating.

"Ooooo, Toby." Ginger whimpered. "It feels so good! I just had to come here! Obhh, fuck me, Toby!"

"You're hot, Ginger!" Toby gasped, thrusting his cock swiftly in and out of his sister's aunt. "You're sure wet and hot!"

The springs of Toby's bed squeaked. Each time Toby lifted his ass for another thrust into his sister's pussy, Lisa's eyes fixed upon his big balls. She watched them smash against Ginger's ass and she could almost feel them banging upon her own ass. Her cunt seemed to be expanding, opening, seeping hot, slippery juices that ran deliciously down her inner thighs.

"Ooooo, so good!" Ginger gurgled, twisting her ass up and down as Toby's cock stretched her sugary cunt lips. "Oooooo! Ahhh, Toby! Oh, good!"

"Yeah!" Toby grunted, his hands digging into his sister's grinding ass checks and lifting her higher while his cock pounded furiously into her eager little clit.

Lisa's mind whirled crazily. Ginger was thrashing wildly beneath her brother, crying out softly with rapture. Her fingers clawed at her brother's bouncing ass, pulling the checks apart and then squeezing them together. Toby had his head pressed into his sister's neck, gasping heavily. His body moved from the waist down, his cock churning up a froth as he fucked into her hungry little cunt.