Lisa spotted Teddy's reflection in the glass of a picture frame just above the kitchen sink in the beach house the family was renting for a month. She was washing the last of the breakfast dishes and wearing the skimpy, pink bikini she'd gotten a few days before the vacation. The sweet looking, green-eyed blonde mother and housewife was still slender and fit enough for the miniscule bikini she'd picked out. Her body was very nearly as tight and firm as it was back in her cheerleading days, though her ass was just a bit rounder and her tits were full, smooth D cups that held firm and shapely.
She didn't know what to think when she spotted Teddy looking in through the open sliders. Her eighteen year old son was only wearing his swimsuit and she couldn't miss the very sizeable bulge in front that gave away the hard on he had for his luscious mother.
It was the third time in an hour she'd spotted him like that, spying on her through the screen as she puttered around in the kitchen in her new swimwear. Teddy had left for the beach with his father earlier. Lisa was planning to go out and join them, but she was enjoying the peace of an empty house for a while first. At least she had been until her son started showing up in the glass reflection of the picture frame. Lisa found herself uncomfortably distracted by the sight of her boy's erection in his trunks. It seemed bigger than expected and she wondered if the glass in the frame was distorting the image of Teddy's youthful excitement.
This time, he was bold enough to touch the shaft in his suit, squeezing his inflated rod as he gazed at his mother from behind. It was natural a boy his age would masturbate over girls in bikinis, but his own mother? That didn't seem very natural at all. If anything, it seemed shameful and twisted, so Lisa didn't appreciate the way her pussy grew achingly warm at the sight of her handsome boy touching himself. It was a painful reminder of how long it had been since his father had given her the benefit of a man's pumping sex flesh. Then again, if she could believe what she'd seen so far in the reflection, her teenaged son actually had quite a bit more to offer a girl than his father. And as much reason as there was to disapprove of the boy's sordid attention, she couldn't help feeling flattered at the same time.
"Fuck," the blonde muttered under her breath. Then she turned around and pretended to be startled by Teddy's presence. It seemed like the only way to put an end to this inexcusable behavior. "Oh my god, how long have you been standing there? Come inside before someone sees you with that ... thing in your swimsuit."
Without looking at all shy or embarrassed about his erection, Teddy slid the screen open, stepped inside and then slid it closed behind him. He didn't show the slightest bit of shyness over the telltale bulge in his suit, leaving his mother momentarily speechless.
"I've only been here a couple of minutes, Mom. I couldn't help it."
"What, exactly, couldn't you help, young man?" she said, forcing herself to sound stern while her eyes kept darting to the impressive bulge in his suit.
"I'm sorry, Mom, but I was dying to see you," the boy said without a shred of embarrassment. "You're amazing."
Lisa felt her face grow warm as she blushed at her son's compliment. She realized her nipples were swollen and perfectly visible in her bikini top while the phony strictness drained out of her tone. It was hard to sound like a disapproving mom when her son was practically staring at her camel toe and she could barely keep her eyes off the way his thin swim trunks outlined the shape of his excited cock.
"That's, um, very inappropriate, baby," she said weakly. "It's not right to get excited over your mother. Aren't there plenty of girls your age on the beach to look at?"
"Yeah, Mom, but none of them make me feel like you do."
Lisa stopped breathing when her son brazenly reached for the front of his trunks and openly squeezed the rock hard shaft inside them. He even let out a soft moan which made his mother's pussy squeeze by pure reflex. But she also couldn't help feeling warm all over from what he said. It made her feel loved to know other girls couldn't make that cock of his swell up the way she apparently could.
"Sweetheart, you, ummm, you need to take care of your problem there." She nodded toward his bulge as if there were a chance in a million he'd miss what she meant.
"I already did once today, but you're right. I should do it again. It'll probably work much better this way."
Teddy pushed his swim trunks down and they fell around his ankles. His swollen cock stood upright, bobbing up and down slightly from pushing his suit down. Then he took his excited shaft in his hand and started stroking.
"Teddy! What are you doing?" Lisa said, shocked. She was staring in awe at his cock which she now knew without a doubt was quite a bit bigger than his father's. But of course she couldn't bring herself to admit she loved knowing that delicious looking young erection was all because of her.
"I'm just doing what you said, Mom," he told her, as if anything about this were normal.
"Oh my god, where's your father? What if he came back?"