Dave climbed onto the bed, kneeling between his sister's long, slim thighs. He didn't have to look at his mother to know her hot eyes were following his straining cock. He grasped the base of his cock in one hand.

"Lift your ass a little, Judy," he asked.

Judy lifted, her legs spread very wide. She kept looking at her mother, expecting a scream or something at any time.

Joann was panting heavily, her tits lifting and falling inside her bra and dress. It felt as if her bra strap would break from the swelling of her tits. She stared at her son's cock, gasping as she saw him rubbing the prickhead up and down the sugary slit of Judy's little cunt.

"Ooooo, Davy!" Judy whimpered as she felt his cock.

He placed the swollen head of his cock at the entrance of his sister's cunt, and began to push slowly.

"Ooo, that feels real good, Davy!" Judy squealed, no longer staring at her mother. She gripped her brother's shoulders, wiggling her little ass as he slipped his cock past the tight lips of her steamy little cunt. Feeling a cock stretching her cunt for the first time, Judy was holding her breath. She didn't feel any pain, that had been taken care of by her fingers months ago. What she did feel was a filling sensation that was more exciting than her fingers had ever created.

Dave braced himself with his hands on each side of his sister's body, sliding his cock slowly into her cunt. Joann watched his prick with blazing eyes, seeing her son's cock disappearing into her daughter's young cunt. Her own pussy was pulsing with a heat that she had not felt before.

Judy, with her brother's cock half inside her tight cunt, suddenly threw her legs into the air, giving a screech of ecstasy. She wrapped her legs about his waist, and her small ass began to churn up and down. Her aggressiveness surprised and delighted Dave, who fucked his cock all the way into his sister's cunt.