"Help me!" Joan shouted in mindless passion. "Oh, Billy! Help me, please! Don't make me do all the work! Fuck me, baby! Ohhhh, fuck mother!"

Billy grabbed his mother's bounding hips, digging his fingers into her flesh. But he wasn't strong enough to stop the grinding thrusts of her hips. Working his ass, he began fucking his cock in and out of his mother's boiling cunt. The sensations that flooded his young body were different than when Doctor Nancy sucked his cock. The doctor's mouth had been wet and hot, too, but there was a definite difference in the feeling.

"Yes, yes, darling!" Joan wailed as her son began to fuck into her cunt, driving his hard cock deeply, his balls beating against her twisting, naked ass. "That's it, Billy! Fuck me! Oh, yes, fuck mother!"

Joan's head twisted from side to side on the bed, her hair flying. Tremors of lewd ecstasy rippled up and down her flesh.

Billy released his mother's hips and grabbed her tits in both hands. He smashed them, squeezed them, making his mother cry out with delight. Her hips churned and bounced, her cunt sucking at his cock in a furious, hungry heat. Gurgles kept coming from her throat, her eyes opening and closing. Her hips bounced as her son rammed his cock with powerful stabbing motions. The base of his cock smashed time and again upon her painfully distended clit, sending the most delicious feeling of fire throughout her naked body. Wet, sucking sounds came from between them, increasing the wild excitement they felt.

"Oooo, yes, yes!" Joan gurgled, slamming her cunt hard onto her son's pounding cock. "So good, so fucking good, Billy! Oh, baby, baby, give it to me! Hurt me, darling, hurt mother's cunt! Bruise mother's cunt… fuck it, fuck it, fuck it!"

Billy had never heard his mother saying those things before. Her words sent a burning heat up and down his body, and her cunt was grabbing at his cock every time he started to pull backwards, the hairy cunt lips squeezing. He felt his balls tighten, drawing up to the base of his cock. They were no longer swinging, and each fuck-thrust into his mother's cunt smashed them against her ass.