"I… maybe I ought to put on my pajamas first," Mark murmured.

Sharon giggled. "Oh, darling, you're such an adorable prude! Mom's not going to see anything if you just sit on my rear end and give me a back rub. Come on, Mark."

Mark hesitantly crossed the room, his handsome face screwed up into a slightly worded expression as he joined his mother on the bed and sat on her upper thighs. Sharon sighed and rested her cheek on her folded forearms. Her enormous, creamy-white tits pressed on the sheets. Mark would be staring at the spongy softness of her tits as he rubbed her back, and that, she was sure, would give him a hard-on. The towel wouldn't provide much concealment.

His fingers trembling slightly, Mark started to massage the strong, feminine muscles paralleling his mother's spine. Sharon sighed and smiled as she felt the wet need throbbing steadily in her cunt. It wouldn't be long, she thought, before they were fucking… fucking wildly, ecstatically, her tits quivering and her ass heaving off the bed as she joyously gave her pussy to her own son.

Any man she knew, would have been eager to take her son's place. Her wide-eyed, soft cheeked face, framed by girlishly short brown hair, had remained youthful and supple, though she was now in her late thirties. Sharon had been blessed with the best legs, the roundest ass and, especially, the biggest, ripest tits in all suburbia. Only her friend Emily had a set of tits to rival her own, and Sharon knew that merely venturing outside in a tight sweater would make every cock in the neighborhood grow painfully stiff.

She could have had any man, but Sharon wanted her son. It had begun when she'd seen how obsessively he stared at her tits, watching them bounce when she did housework without a bra. Sharon had then begun to dress provocatively on purpose, and that was when she'd noticed that Mark would frequently develop giant, throbbing hard-ons while looking at her. Sharon had finally begun finger-fucking to thoughts of her son, first once, then twice, then countless times each day, imagining herself lovingly sucking the juice out of her son's swollen cock.