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?"
"He's way down the beach flirting with a bunch of girls my age. I can't believe he's not here with you. You're so much hotter than them it isn't funny."
"Aww, baby, that's really sweet of you, but this isn't normal."
Teddy stepped out of his shorts and kept stroking his cock while his eyes roamed over his mother's body. As astonished as Lisa was, it was far outweighed by the pleasure she felt by her son's admiration. It was so wrong, but she loved the way he was looking at her and she was excited to see a cock that was so much bigger and nicer than her husband's. She wasn't surprised to know he was flirting with younger girls on the beach. He wasn't even discreet about it most of the time and Lisa was tired of it. Why shouldn't she be able to savor the knowledge she still had everything it took to turn a younger guy on and then some. Even if it happened to be her own son?
With his thick flesh pole in his fist, Teddy stroked with a firm grip. Rapidly oozing precum started to make audible slicking noises as he jacked himself. Lisa wasn't ready for how much the mere sound of her son's wet jacking affected her whole body. Her aching nipples were impossible to miss in her scant swimsuit top, and Teddy's eyes were glued to them. At least he couldn't tell his mother's pussy was steadily leaking into the gusset of her bottom. Lisa was still holding out the hope she had a shred of maternal dignity left, yet that big, succulent looking cock in her son's sliding fist was hypnotizing her.
"Mom, pull those tits out and let me see them. They're so perfect. I promise it'll make me cum faster if you do," Teddy pleaded.
Lisa's first instinct was to please her fully naked, cock-stroking son, as totally wrong as it seemed. But then again, in her little pink bikini, there wasn't much left to her horny boy's imagination. Just pulling those stretchy, V-shaped strips of material off her tits seemed so easy. She was already so exposed except for her nipples and areolas. Would it really be that much worse than what they were already doing?
"Well, I guess if it's just this one time, okay? Just so you can finish up faster," she said, justifying herself. Then she pulled the strips of bikini fabric to both sides and revealed her succulent melons in their fully fantastic glory. The pretty, blonde mother felt a rush at the sound of her son's lustful moan.
"Oh, Mom, fuck," Teddy groaned. "Those are so incredible! Those girls Dad's flirting with don't have anything like you."
Lisa couldn't hide her awe at seeing her son jacking his rod even faster as she exposed her heavy tits. She was barely aware of the motion of her own hands as they moved to cup and fondle her orbs, making Teddy moan more and more desperately. With a throbbing pussy, she tweezed and twisted her swollen nipples, revealing how sensitive they were to her entranced boy. Without revealing her smoothly shaven pussy mound, Lisa pushed one hand into her bikini bottom and started to finger her wetly excited slit. She was soon moaning as much as Teddy while she furiously battered her slippery clit with her fingers.
Lisa had never felt so close to a climax just from fingering her pussy. After promising her son, and herself, it would only be this one time, she gave herself over to the forbidden pleasure.