David and I were college students. I had got to know him during an event and became close because of our shared love of the gym. We would often go together to work out for an hour or two. I have to admit that he was really attractive. I often checked out the sight of his glistening biceps as he was doing curls, or his ass during squats.
Our routine continued for a few months. I was really glad of the progress I was able to make with him. He always knew exactly what to say and do to push me to my limits. I secretly enjoyed getting bossed around by him.
--
One morning, I received a message from David.
"Hey, meet you in front of the gym at 8. I have something to show you."
Mildly intrigued as the gym wouldn't even be open by then, I texted him OK, and got ready for the gym. My usual outfit consists of a black tank top and shorts. I liked showing my broad shoulders and back off.
As I arrived in front of the gym, I was greeted by David. He told me to follow him inside. Instead of going through the main gate as usual, he opened a door that led to a staircase leading down.
"Where are we going? Entrance is over there" I said. "Oh, I found something down here the other day, come and see." he answered back.
The stairs led to an underground area, which I surmised was under the gym, from the clangs I heard. The place was quite dark, and was used for storage. He took me round a corner, and into a small, dimly lit room. I noticed that one of the walls had a screen, and a small opening to it.
"What is this place ?" I asked as the door closed behind me.
"Oh, you'll see" grinned David.
Before I could react, he got me in a chokehold from behind. Before I knew it, he pulled out handcuffs from his pocket. My hands were swiftly chained behind my back. A kick to the legs got me down to my knees.
"Sorry, bud. I'm not gonna pretend I'm not enjoying this, though. I know you've been checking me out so I suspect you're into this."
Before I could shout for help, he shoved a ring gag in my mouth. A padlock made sure I couldn't remove it. Any words I said came out as moans or wails.
I was unceremoniously dragged to the wall. A heavy metal collar was fastened to my neck. Two chains attached to it were fastened to the wall. My ankles and wrists were also padlocked with two heavy cuffs.
I struggled against my bonds, which proved to be useless.
He pulled out something from the opening. It looked like a gas mask, with a pipe threaded through the mouth opening. He shoved the pipe into my mouth as he also padlocked the mask to my face. My vision was restricted as I could only see in front of me.
I was chained to my knees, with no chance of escaping from my restraints.
"I've always fantasised of turning you into the gym urinal. Turn a buff guy like you into a piss tank."
He slowly stroked my shoulders and pecs through my tank top. Gym urinal? Piss tank? Oh fuck. I tried calling for help, but my pleas came out as muffled moans from the mask.
"Turns out the pipes from the urinals upstairs pass down through here. Figured I could just replace the pipe with, well, you. The gym doesn't know about this, but if I just lock the door shut, they won't ever know, right?"
"Though of course, urinals like you shouldn't wear clothes". His hands roamed my ass and my crotch. I grunted through my mask as I shook against my restraints.
He whispered into my ear. "Here's what your routine is going to look like. On weekdays, you'll live your daily life like normal. We'll go to classes and train together. On weekends, I own you. You'll drink man piss all day in this position. Once the gym closes, we'll have the place to ourselves. I've got a routine from hell for you."
"To make sure you don't disobey me, ever, I'll lock your dick in a chastity cage." He started to stroke my dick under my shorts. "Besides, I'll need to insert a pipe down your urethra so that you won't make a mess. I won't be unlocking you anytime soon."
I wailed and grunted. This couldn't be happening. Part of me was horrified of turning into David's piss slave, but another part secretly enjoyed surrendering to him. I suppose he knew about this.
Using scissors, he snipped off my tank top and my shorts, and took off my shoes and socks. He was deliberately slow in his work, making the cold metal of the scissors glide against my skin. I shivered as I was progressively exposed. He left me in my underwear.
"Before I put the cage on your dick, I'm going on a test drive."
He turned the screen on before leaving the room. A few moments later, he appeared on screen. I quickly realised that it was connected to a camera, filming the users of the urinals upstairs. The camera was placed in the porcelain, giving me view of the person pissing into the bowl, as well as their dick.
"Alright piss pig, he goes", I heard him say through a speaker.
I wailed and shook desperately as I saw David look straight at the camera as he pulled out his cock, take aim and let out a strong stream of piss down the urinal.
The liquid hit me after a few seconds, the stream rushing into my mouth. I cry-gurgled as I realised that the gas mask restricted my breathing, meaning that I could only breathe through the pipe. If I wanted air, I needed to swallow the piss as fast as I can. I had no time to feel disgust at the taste or even feel the sheer humiliation of being used as plumbing. I desperately gulped down the piss that flooded into my mouth, as I stared at David grinning at me sadistically through the screen.
Eventually, the stream ended. I was left panting, feeling like a filthy animal.
"If you thought that was intense, I can't wait to see what it will be like on peak hours. You know you're connected to the four urinals in a row, right?"
I grunted and cursed through my ring gag.
"Don't worry, you'll be allowed to hydrate and be fed during service. I'm not that cruel either, I'll need you in shape for slave training later. But for now..."
I looked, without being able to do anything, as David spat into the urinal. 4, 3, 2, 1... As his spit entered my mouth, I learned that there was only a four second interval for me to brace myself for incoming fluid.
A few moments later, David entered the room again. I couldn't see him, but I felt him approach behind me.
"See this?" he showed me a metallic object in his hand.
It was a metallic chastity cage. It looked extremely small in his hand. I could tell that my dick would be compressed in the cage. It was designed in such a way that a pipe could be threaded through it, into my urethra.
He slowly cut off my underwear, revealing my ass and cock. His hands slowly roamed around my body, pinching and caressing my shoulders, nipples, ass and cock.
"Fuck, you're one hot slave. I'm going to enjoy making you mine. I'll take my time with you."
One hand cupped my balls, whilst the other started to stroke my cock. Despite everything that happened to me, I grunted as I was betrayed by my dick, as I quickly grew a boner.
"Damn, you're one fucked up pig to get turned on by this, you know?" he said into my ear. "Enjoy this, this might be the last time you ever cum. Hope you learn how to orgasm in a cage quickly, it's not coming off."
What- no, I frantically struggled against my shackles as I heard this. I could not let this happen. My last penile orgasm could not be in the middle of being converted into a human urinal.
"Stop it." he said, as he tightened his grip on my balls. I yelped in pain, and I stood still.
"Good boy." he released his grip and continued stroking my cock. At one point, he moved in front of me, kneeled, and continued stimulating my cock.
"Look at me". He said. I raised my eyes and locked in with his through the gas mask. "That's right. I want to see your pathetic look when you cum, and realise that you'll never get to jerk off again."
This was fucked up, but I was increasingly liking this. After a few minutes, I got close. My whole body clenched and tightened as I spurt my load all over the floor, letting out a animalistic, guttural groan from my throat. Despite being chained and made to drink piss through an urinal, I somehow had the most intense orgasm of my life.
As my mind focused again, I went back to looking into David's eyes. He was grinning as he took the chastity cage from besides him.
"I'm glad you enjoyed that, bro. I'm going to enjoy what I'm about to do to you now even more."
I was so exhausted that I could only let out a defeated moan, my breath stinking of piss.