She sat on the couch next to Becky, her hands once more holding the girl's cunt open.

"Shove it in her, Ben," she hissed. "Push your hard cock in Becky's cunt! It's wet and ready for you!"

Ben moved his cock forward. The swollen cockhead probed the open insides of his sister's cunt. Becky squealed as she looked down her naked body, trying to see her brother's, cock penetrate her pussy.

Ben hesitated.

"Do it, Ben!" Julie urged hoarsely. "Put it in her cunt!"

Ben shoved. Becky screeched.

Ben's cock fucked deeply into his sister's cunt, hairless cock base smashing hairless pussy lips. Julie's eyes filmed over with erotic pleasure as she watched her daughter's cunt stretch around her son's cock. She saw Becky's pussy lips twitch, clamping in flexing motions. The hard tip of her tiny clit was out of sight, pressed inward by Ben's throbbing cock.

"Oh, it's in me!" Becky cried. "It's way in me! Ohhh, it feels so big! My cunt feels so full, Ben!"

"Fuck!" Julie gasped, sliding her hands up to her daughter's tiny tits.

She pulled and twisted the sensitive nipples, her eyes straining down to watch Ben as he pulled his cock backward. Becky lifted her cunt, afraid her brother would pull free. But Ben didn't take his cock out. He pulled back until only the cockhead was inside her, then he lunged inward.

"Oooooo, yes!" Becky wailed, her slim hips churning. "That's good! Fuck me, Ben! Ohhh, Mother, it feels so fucking good inside me, in my cunt!"

Julie gurgled as she watched Ben fucking his cock back and forth, Becky's little hips squirming and twisting, bouncing up and down to meet the hard, quick lunges of Ben's cock. Once Ben's cock was inside Becky's creamy cunt, they fucked as if they had been fucking for years. Instinct took over, and Becky met her brother's cock-thrust with a grinding, bucking motion of her little ass.