Avery was on a road trip to visit his newly married brother a couple of states over–it was a drive he’d made fairly often, and by far, the thing he hated the most was having to stop on the road to go to the bathroom. The fasted highway there wasn’t the busiest, and the two rest areas along the way weren’t particularly well maintained. Still, he also wasn’t a fan of pulling off onto the shoulder just to take a piss, and so he resigned himself to taking a stop at one of them, and pulled off the road.
There were actually a number of semi-trucks parked off to the side, as well as a few smaller cars like him. When he got into the grungy restroom, he was surprised–he had to stand there and wait for a urinal, because both were occupied by guys. One seemed fairly normal, and the other looked like a trucker–thick beard, heavy gut–he let off a belch as he pissed and wiped a bit of slobber onto his sleeve. He finished first, however, and backed off–Avery realized as he walked up and undid his fly that the slob hadn’t even bothered to flush. He reached for the handle, a bit surprised by how dark it was, but before he could flush it away he the stench of it hit him.
It was strong–some of the strongest piss he’d ever smelled, but while he wanted to gag, he found his body reacting differently–he took a deeper breath, and felt his knees start to shake a bit. What was the matter with him? Just flush it already! He tried, but his arm was weak, his head dropping lower to smell it better. The man beside him finished pissing and gave him a disgusted look before booking it out of the room, leaving Avery alone–or so he thought.
Behind him, the trucker was smirking, watching as Avery kept smelling–snorting really–and dropped to his knees in front of the urinal, hauling his cock free as he did, unable to believe how turned on he was.

“Always nice, getting a chance to spread the good news,” a voice said behind him. He couldn’t…quite turn away from the piss in front of him, but he heard heavy footfalls as the trucker walked up beside him, looking down and smirking. “Nice, ain’t it? Never smelt anythin’ like it in yer life, I bet.”
Avery didn’t quite know where to find his words, and so he nodded a bit, eyes still glued to the piss in the bowl.
“Thought we were runnin’ out! Ain’t found a convert in a while. Good tah keep the faith alive though,” the man walked up, bent down and ran his hand through the piss, sloshing it a bit, and then pulled it out, dripping, and wiped Avery’s forehead with it. It ran down over his eyes, which he shut tight, past his nose, to his mouth–helpless, his tongue darted out for a taste, and his cock leaked precum even faster than it already was. “In the name of our Glorious Master, are you ready to receive your baptism, brother?” the trucker asked him in his ear.
The trucker didn’t wait for a nod, or a yes–he palmed Avery’s shaven skull and shoved his face into the piss, pressing his face to the porcelain while Avery shuddered. He could taste it–he could smell it. It was inside him now, but what? More than the piss, but it wanted more, it wanted to be deeper. He hadn’t managed to get much of a breath, and the trucker wasn’t letting him up for air. He struggled harder, but the man’s weight was leaden. He tried to reach for the flush lever, but couldn’t find it. Unable to fight any longer, he inhaled the filth, and felt the still warm piss flood into his lungs, filling him with…with the Master. Master’s will, God’s will. He could…see, as his vision blurred, a man, a massive fucker, reeking of piss and musk. He would serve him, he was meant to serve him he–
A fist slammed into his gut, right on his diaphragm, and Avery coughed, spraying piss all over the floor where he’d fallen. The trucker was beside him, and pulled Avery’s head into his lap as he coughed, and he felt the stiff shaft of…of his brother’s cock pressing against the side of his face, but he didn’t flinch away–he rubbed against it, horny, aching to serve him, to serve the master.
The man let his cock out, and Avery started sucking at it, hungry for cum, delighting in the taste, digging in his own pants for his cock, only to find it had somehow doubled in size, rivaling his brother’s in length and girth. With his other hand, he discovered other changes, but he didn’t grasp the full scope of his conversion until he’d drank his baptismal load of cum and been helped off the floor. In the mirror…it was him, and yet it wasn’t. Big gut stretching his hoodie, pants bursting at the seams to contain his wide ass, thick beard on his face, and hair coating his body.
“Come on brother–ya have a load of piss fer me, I think, and then I need a nice long fuck. Haven’t had an initiate in ages, ‘n this trucker pig needs tah worship some God Cock, don’t you?”
“Fuck yeah,” Avery said, his deep, gruff tone making his cock leak, and he leered at his partner. “Ain’t been tah church before though, so yer gonna have tah show me the way.”