He was the only one to jack off into her mouth. Her husband never did, although she had tried to get him to. He considered it a waste of good pussy, he told her, or a blow-job. And by now, Mandy was very good at sucking cock. She was very good at fucking, too. She was very good at anything erotic…

Gazing at the young man ten feet away on the sand as her son kept rubbing oil into her flesh, she fantasized watching him jack off, his cock big and hard, his balls full. She licked her lips as she saw, in her mind, the hot spurts of cock cream spew from his piss hole… right into her mouth.

She moaned, the cheeks of her ass bunching as a small, but very nice orgasm exploded in her cunt. She felt her son's hands pause on her back as she came.

"Something wrong, Mom?" he asked.

"Mmmm, no darling," she breathed.

"You're shaking."

"I'm fine," she whispered.

Derick, his hands at his mother's lower back, had seen the sudden clutching of her ass, and stared at it, fascinated. The tiny bikini bottoms had drawn up into the split of her ass, exposing the creamy ass cheeks. He watched them ripple and contract. Leaning over, he glanced quickly at his mother's crotch. He saw a few dark cunt hairs curling from the tight band, and also a trace of moisture there.

Feeling his cock stiffen inside his trunks, he sat up straight, his hands now shaking slightly as he continued to rub oil into her flesh. He kept looking at her ass, the backs of her thighs, not realizing his breathing was getting louder.

Mandy knew, though. She listened to her son's breathing, and knew the sounds very well. When she understood her young son had probably seen her ass cheeks bunch and squeeze, she didn't feel embarrassed. On the contrary, she worked her ass some more, knowing her son was gazing at it. She began to wonder if her son was getting a hard-on, wanting to take a peek at him. She flexed her ass cheeks time and again, spreading her long thighs a little wider. She purred softly, her imagination becoming wilder and wilder.