When the flood of his come juice stopped, Johnny pulled his hands off his mother's tits sliding them to her hips. He held her naked hips a moment as he slowly regained strength. Then while his cock softened, he pulled it from her pussy.

Jennifer, struggling to breathe, remained bent over, only her hands on the row of mailboxes preventing her from sliding to the floor. She was so weak she couldn't close her legs, and she rested there with her short skirt at her waist, her ass exposed, her cunt dripping the juices of her son's hot balls down her inner thighs.

When she felt strong enough, she stood up, turning around, still breathing hard. She pushed her hand under her skirt and cupped her cunt, feeling his juices seep from it. She giggled shyly. She suddenly felt bashful, an emotion she had not felt in years.

She used her other hand to gently fuck her son's cock and balls back into the leg of his frayed cut-offs while he sucked in air.

The sound of the outer doors opening caused her to jump, jerking her hand from beneath her skirt. It was coated with their juices.

A man entered, glancing at them, then going to the other end of the mailboxes. Then he looked back at Jennifer again, his eyes widening. Her short skirt was folded up slightly, and the man saw her blonde pussy hairs.

Jennifer grabbed her son's hand, and almost ran from the post office. She was giggling by the time they were in the car.

"I guess we did it, huh, Johnny?" Johnny grinned at his mother proudly, nodding his head.

Jennifer wrapped her arm about his shoulders, pulling him to her lips, kissing him hard, the tip of her tongue licking across his lips.