"Want to fuck me, Billy?" she whispered, rubbing the head of his cock along the scalding slit other hairy cunt. "Want to stick your cock up Mother's cunt, fuck me like Bob was?"

Billy was grinning widely, staring excitedly at his mother's full, lovely tits. Holding herself up on his lap. Susan mewled softly, the feel of her youngest son's cock on the lips of her cunt very exciting. She felt the round prick head throbbing, and pressed his cock upon her swollen cunt. She moaned with pleasure.

She watched Billy's eyes as he gazed at her tits, knowing he wanted to touch them, but wasn't sure if he should.

"You touch them, baby," she whispered. "You hold Mother's tits, play with them, suck my nipples."

With groaning delight, Billy closed his small hands about her spongy tits. Her nipples seemed to grow more rigid against his palms. She shook her shoulders, moving her tits in his hands. She wiggled her crotch, fitting the head of his cock barely between the puffy, juicy cunt lips. Water swirled hotly about them.

Although Susan had forgotten about her other son, Bob still leaned behind her, watching, wishing they were out of the water so he could see, could watch his brother's cock press into their mother's cunt. His own cock, still painfully hard from his interrupted fuck, stood out from his lower stomach beneath the water.

Billy was much too excited to speak. He tried a few times, but the words were garbled. His young body shook with intense excitement as his mother straddled him, the head of his cock barely inside her fiery cunt. The urge to fuck into his mother's pussy was powerful, but he was afraid to do anything unless she told him to.

Susan understood his hesitation. She pressed her lips upon Billy's mouth. The tip of her tongue shot forth, licking at his teeth. When Billy opened his mouth, Susan wormed her tongue past his teeth and licked slowly about his. At the same time, she inched her cunt down onto his very hard cock, making soft moaning sounds as his cock filled her cunt.