"Are you getting horny, darling?" she asked in a whispery voice.

"I sure am, Mom," he replied just as low.

"Want to find some place to fuck?"

He looked about. "Where can we go?"

"We can be in the room in five minutes," she said, getting up and shaking sand from the towel.

Carrying the towel and her small basket containing tanning oil and various objects she felt necessary to always have with her, she began to walk across the hot sand, Steve trailing behind. Glancing over her shoulder, she saw he was watching her ass. Giggling silently, Mary began to twist her ass with an exaggerated motion, swinging it from side to side. Her cunt was pulsating again, and she was becoming wet between her thighs. If not for the tightness of her bikini, her legs would be slippery already, she knew.

The bottom of her bikini had pulled into the crack of her ass a bit, and the lower curves of her ass cheeks contrasted erotically with the tan of her long, slender thighs. Pretending to adjust the bikini bottom, Mary instead caused it to tuck between her ass cheeks more. Glancing back at her son, she saw an approving grin on his young face. They passed underneath the wooden pier, the sand here cool and moist.

Mary stuck her tongue out at her son, then began to run, dodging the thick bracing poles. Steve raced after her, and she slowed enough to allow him to touch her ass, then sped up again.

She reached the door to their room breathless, but laughing happily. Using her key, she opened the door and stepped in just as Steve came up behind her. Before she could close the door, his hands were around her waist, then upon her straining tits, squeezing tightly. She leaned into him, her ass arching as Steve pressed his throbbing cock against it. She twisted her ass and mewled in pleasure, placing her hands on top of his, smashing them tight against her tits.