Given his previous experience as a lifeguard at the fitness center for the past two years, not to mention his reputation as a hard worker and a generally solid and reliable young man, Tyler wasn’t just assigned to the outside pools this year (which was already great news because it allowed him to be always in visual contact with Michelle, who was working at the smoothie kiosk near the tennis courts nearby), but he was also given supervisor duties as well. Beside entailing a slight bump in his paycheck, that relatively minor career advancement came with the perk of receiving the keys to the employees locker rooms and a few other structures within the center, including the small maintenance building adjacent to the main edifice. Much to his glad surprise, when he took an exploratory tour of the equipment-cluttered and chlorine-smelling maintenance shed, Tyler noticed a door half-hidden behind a stack of big cardboard boxes. Upon closer inspection, he verified that yes, as he had initially suspected, that old and clearly long-unused door opened right into the staff locker rooms, specifically into a tiny broom closet sort of space within the women’s locker room, where, among others, his beloved Michelle changed into her uniform and left her stuff.
That random revelation brought a huge grin to Tyler’s face and gave him an instant boner, which was a bit of a problem given the massive tent it caused in his swimming trunks, forcing him to wait and patiently allow his erection to subside before he could return to his duties as a lifeguard by the pools. At his next break, when he joined his sister for lunch and gave her the good news, Tyler almost had a heart attack, because Michelle’s reaction was so impulsively joyous that she threw her arms around his neck, leaned in and almost planted a big wet smooch on his mouth, right there in plain sight of everyone who might be watching, such was her happiness at the realization that they could turn that barely used maintenance shed into their workplace love nest.
As he reciprocated the tight hug that Michelle gave him after she managed to turn her intended passionate soulkiss into a loud yet more conventionally sisterly peck on his cheek, Tyler briefly looked around to make sure that their almost-kiss hadn’t been noticed, but seeing that the coast was clear, he relaxed and enjoyed the feel of her big soft tits pressing against his chest and almost spilling out of her tight cleavage-revealing polo shirt. As they finished their lunch though, Tyler was forced to be the voice of reason and convince Michelle, who wanted to rush to the shed and buttfuck right away, that they would be better advised to wait at least until the next day before sneaking in a quickie at work, so that he could check the comings and goings around the small building and make sure that there wasn’t any serious risk that they would end up getting busted, with all that it would entail.
Grumbling and pouting yet knowing that her big brother was right, Michelle eventually agreed, but she was so excited by the news that, all through their lunch break, she kept conjuring up increasingly steamier and sexier scenarios, listing all the naughty things they were going to do and how hot it would be to do them. Unsurprisingly, by telling her brother how horny she felt at the idea of the two of them having sneaky sex on the job Michelle only made him hornier than he already was, so much so that, when it came time for them to go back to their respective duties, Tyler realized that he would have to remain behind and sit a little longer at the table they had occupied, so that his raging erection could have time to deflate within his trunks, again.
Giggling and licking her lips as she stood up from her seat beside him, Michelle look around then leaned closer and whispered in her brother’s ear while sneakily patting his huge bulging tent with her dainty hand: “I can’t wait to take care of this, Ty… Mmh, I sooo can’t wait!”
Then she scampered away, tittering and smiling playfully at Tyler over her shoulder while he exhaled and tried not to stare too hard at her plump, short-clad bubble-butt and massive gravity-defying tits wobbling and bouncing all over the place. But of course it was no use trying to resist the allure of his sister’s voluptuous curves, and even after Michelle had disappeared from sight Tyler couldn’t stop his thoughts from wandering and evoking images of her gorgeous body, reminding him of how incredibly beautiful she looked naked and especially while she was cumming with his huge cock stuffed balls-deep up her plump round ass, whimpering his name between moans of pleasure.
“God damn it,” Tyler groaned to himself, blinking out of his temporary daydreaming and glancing down at his crotch, only to realize just how furiously his rock-hard boner was straining against the confines of his tenting trunks. “I’ve gotta think of something else fast, or I’ll be sitting here forever…”
Fraught with trepidation and anticipation and unsatisfied horniness as it was, the siblings’ first day of work still ended up on a decidedly positive note. After keeping a close eye on the maintenance shed and having nonchalantly asked around among fellow lifeguards and other members of the staff, Tyler ascertained that the tiny annex building was in fact an extra storage area that was very rarely accessed at all, and if so only after hours by the maintenance crew to get the kind of chemicals that would be used to clean the pools if the supplies in the main storage facility were exhausted. In light of that knowledge, Tyler’s grin of triumph and Michelle’s beaming smile complemented by her irrepressible naughty giggles at the end of their work day were more than justified, and so was the burning excitement that possessed them both as they got into the car to head home.
Horny as he was, Tyler didn’t even for a moment think of dissuading his giddy little sister when, as he was just starting the car, she reached for his bulging crotch and undid his pants, letting his throbbing horsecock spring out in all its thick, raging hardness. By the time Tyler had pulled out of the fitness center’s parking lot, he was already moaning and leaning back in his seat, for Michelle had hungrily dipped her head down on his lap and her lips were wrapped greedily around the fat bulbous tip of his schlong, the liquid heat of her mouth spreading down his pole as she took more and more of his veiny shaft into her oral cavity. Once she had his whole boner crammed balls-deep in her constricting gullet, Michelle let out a slurping, gagging sound that Tyler could only interpret as an obscene sigh of satisfaction and which marked the beginning of one of his sister’s most awesome blowjobs yet.