With a shout, Donny's body became stiff, his cock buried deep inside her cunt. Knowing he was about to come, Marilyn clung to his ass cheeks, keeping his cock deep inside her pussy.

"Come, darling!" she hissed throatily. "Oh, God… come!"

Donny's cock pulsated, then she felt the hot gush of his come juice wash about her cunt. Each spurt seemed to splash along the satiny walls of her heated cunt like the crash of waves upon a rocky beach. Her clitoris was tightly knotted, and she came again, a powerful convulsion that caused her back to bow, and her cunt to ache. She screamed a low but very loud wail of mindless ecstasy.

Donny rested on top of his mother's naked body, breathing hard. She held him tightly, her hands fondling his back and quivering ass cheeks. His cock was captured by the wet tightness of her cunt and she luxuriated in the sensations still heating her body.

Finally, Donny moved. He crawled from between his mother's thighs and sat next to her. She looked up at him with slitted, steamy eyes. Her son was grinning with delight, and he stroked her tits gently with one hand.

"You're not ashamed?" she whispered.

"Not at all, Mom," he said. "I'm glad we did that."

"Really?"

He squeezed her tit with both hands, making her succulent nipple rise up sharply. "Mom, I've been peeking at you every chance I get. You don't know how glad I am we did this."

Marilyn giggled. "And I though you were interested only in your butterfly collection. When did you develop this interest in girls, darling?"

Donny leaned over and ran his tongue about his mother's sweet nipple, then said. "When I met Sally."

"What has she got to do with it?"

Donny told her about how the girl had teased him by lifting her dress and showing him her pussy, and how hard his cock had become. He told his mother how excited Sally was to look at his cock. These revelations excited Marilyn more than she would have suspected. Boys and girls did such things she knew, she had done them when she was Donny's age.