"I'm coming!" she cried out with rapture. "Oooooh, my pussy… Billy, you're making me come! Ahhhh, it's so beautiful!"

Her cunt contracted over and over, gripping her son's cock wetly. Since she was still pressing his young balls into the crack of her ass, he could feel the crinkling motion of her asshole on them. He spread his mouth wider, taking as much of his mother's tit as he could into it, his tongue swirling. He pulled at her ass, opening the cheeks and Misty, squealing as her orgasm went on and on, crushed his hot balls against her puckering asshole. His cock was throbbing and his balls ached with fullness.

The spasms of her cunt slowed, and she felt her son's cock throbbing more than ever. She made a hissing sound, and began to thrust up and down again, fucking him, but without her initial frenzy. She pulled the hot, wet lips of her cunt to the swollen head of his cock, sliding back down, rising her son's prick with soft, delicious squeals.

"You're going to come, Billy," she breathed. "I can feel your cock swell… throbbing. You're about to come, and in mother's cunt!"

Thinking his mother didn't want that, he tried to pull free of her cunt, but she rammed her ass down tightly, grinding in hot circles.

"Oh, no you don't!" she gasped. "You're going to come in me, come right up mother's cunt, Billy! Don't you take it out!"

He was losing control, about to discharge. He almost pulled his mother's nipple into his throat as the irresistible urge to push came over him. He lifted his ass off the seat of the car, and his mother pushed down on him.

"Do it!" she hissed. "Squirt it to me, Billy! Oh, baby, squirt that hot juice up mother's cunt! Don't stop it… come in my pussy!"

A low, throaty grunt came from Billy.

"Now, Billy! Now!"