Editor's note: this story contains scenes of incest or incest content.
***
"Danny! Hurry up!"
"For fucks sake Sean, would you chill out? You act like you've never seen a pool before."
"Not one that was actually clean and full enough to swim in! Now come on!"
Danny sighed and rolled his eyes as his twin brother raced ahead of him, bare feet slapping on the pavement outside the motel they were at. This one just happened to be in Mississippi and close enough south that even the crappy cheap motels had real pools for the tourists. Sean was right. Most of the places they stayed didn't even have one and the ones that did looked like they belonged in horror films. Sean loved to swim. Danny didn't know where he'd picked it up, but the nerd went ape for it every chance they got.
In fact the rarity of the occasion meant that neither had proper swimwear. Cutoffs would just have to do. Dad was passed out in the room but the last thing he'd said, while Sean was trying to get out the door, was that Danny had to go with him to make sure overzealous little Sean didn't drown. Sean and Danny were both 18 and knew how to swim. Dad probably just wanted the privacy for an hour but whatever. Danny didn't care.
Danny didn't mind spending some time outside. Besides, he wasn't so much making sure Sean didn't drown so much as watching him swim, because Sean was entirely different in the water. All those gangly limbs turned sleek and graceful, cleaving the water like a shark, swift and deadly. Dean watched his brother twist and flow, tanned skin wet and glistening in June sun and as usual lately his mind started to wander.
Danny was no stranger to sex. In fact, it occupied quite a lot of his brain and not a small amount of his physical life. His hormones worked and so did his body. He had fantasies, collected porn, jerked off, and had even been with a few girls, unlike his self-confessed virgin of a brother. So imagine his surprise when he'd started having wet dreams about his twin brother.
He knew it was wrong. Knew it was sick. Did everything he could to curb it, get rid of it, but it just got worse. The more intense the dreams got the more he found himself paying attention to Sean during the day. The way the light would catch Sean's hazel eyes and make the gold stand out. The way his fingers moved when he shuffled cards. The way he smelled, because they still had to share a bed. He'd watch Sean. Then the watching came with fantasies about how Sean would taste if they kissed. How those slender fingers would feel on his skin.
Watching Sean in the pool now Danny could just imagine being in there with him, shoving Sean up against the side of the pool. Finally getting to touch all of that skin, the water letting his hands slide. Hearing his brother say his name with that same breathless whimper the girls do when he does something right. Feeling Sean's delicate fingers tracing the edge of his shorts.
"Danny! "
Danny was yanked out of his fantasy with a barely stifled groan. His eyes flashed open and fixed on Sean, who was hanging onto the edge of the pool grinning at him, utterly oblivious to the painful hard on his brother was hiding. Sun sparkled on the droplets of water that clung to his eyelashes as Sean laughed.
"Were you asleep? "
"No I wasn't asleep," Danny groused. "It's bright out here and my shades are in the car. What do you want?"
"You should come in. We can race. Bet I'll win."
"Yeah right Sasquatch," Dean smirked. "Like that's ever happened. "
"Yeah but I've been working out."
"Bigger don't mean better Seany boy. I'll show you. "
Thankfully his boner had backed down to a manageable level before he stood up, took two steps and cannon balled into the water. They spent the next few hours dunking and splashing each other. They did race, and Danny did win, but it was much closer than it had been. Danny knew Sean would beat him the next time, and that would be ok. He tried not to think of his poolside fantasy, though it kept asserting itself at really inconvenient moments. He was pretty sure his brother hadn't noticed he had a chub on most of the day. Or if he did he was being polite about it.
They laid out until they were mostly dry and headed back to the room. By the time they got there the room was empty but there was still warm pizza. Dad had left again, but dinner was reasonably fresh. Sean decided getting the chlorine off was more important than food, a concept that boggled Danny's mind. In fact, pretty much any situation where food came second confused him. That was Sean for you. Danny shrugged, digging into the pizza while Sean headed for the bathroom.
Danny was on his second slice when the water turned on, and his imagination went with it. Sean under hot water, covered in soap, slick bodies sliding together. His cock got hard so fast against his zipper that it hurt. He tried to focus on eating, the ingredients on the pizza, counting how many times he chewed, willing away the persistent erection. It didn't work at all. He was rubbing himself through the stiff denim and finally threw the pizza crust into the box in defeat. He's got to get out of these shorts before he cuts his damn dick open on the metal. He should have worn underwear, but how was he supposed to know this was going to be an issue?
Danny went over to his side of the bed and dug around in his clothes, finding the change of clothes he would use once he got out of the shower, including the clean underwear. He was basically clean from the pool. He just had to get the coating of chlorine and stuff off. The heavy chemicals smelled weird and dried out his skin, making him itch, and since he wasn't a girl there was no lotion to be had. Though, thinking about it, lotion might not be a bad thing in the wank department. Of course that brought his attention right back to the stiffy he was trying to deal with.
Danny sighed with relief as he carefully popped the button and unzipped the offending shorts, freeing his cock from the offending makeshift swimwear. He shoved the denim down and off and kicked them into a corner. He flopped onto his back in the bed, closing his eyes as he ran his hand lightly over his balls and brushed up the bottom of his erection, before gripping it loosely and giving it a few strokes. He gave a smile, his mind wandering back to Sean in the shower and a vision of those big hazel eyes staring up at him, lips parted as Danny guided the head of his cock in between them.
"'Oh, fuck," he moaned, squeezing his dick to keep from cumming right there. He heard the bathroom door open and bolted upright, snatching up his clothes and holding them in front of him as he pushed past Sean.
"You better have left me some hot water bitch!"
"Whatever, jerk!"
Danny is surprised that Sean doesn't hear him cum in the shower because holy shit. That image of fucking Sean's mouth in the shower was the most insanely hot mental image Danny had ever thought of, and he'd seen some stunning porn by now. He wondered if he was gay, but he'd tried watching gay porn and it didn't do anything for him. He only seemed to want to sex up his brother, which was plenty fucked up, but he supposed it was ok so long as he never actetd on it right? Of course his back brain was only to happy to chime in with "yea, and how long do you think you can keep that up?" Danny was really afraid the answer to that question was "not that much longer". He didn't want to molest Sean! He wanted Sean to like it.