Having a bladder holding contest with a friend that you don't know is a demon. You're laughing at him for drinking more than you, teasing that he's not going to be able to hold all that in for very long. You hold while you're watching a movie or playing games, checking in with each other now and then. Your bladder fills quickly and, soon enough, you have to squeeze your legs together. You glance over to see how he's doing. His legs are open casually and he's as calm and relaxed as ever. He takes another swig of his drink. You take a sip of yours. Another half hour goes by and you're squirming on the couch. He reclines back and there's a very visible bulge in his lower abdomen that doesn't seem to be bothering him in the slightest. He just has a big bladder, you think. That doesn't mean he has the constitution required to hold all of it in longer than you. Another fifteen minutes, though, and your legs are crossed, all your muscles are clenched, and you're holding yourself with your hands. The first spurt comes out.
"Fuck," you swear, and try to tighten your legs.
"You better not piss all over my couch. Just take the loss. I won't think less of you."
"How the fuck are you still so chill?" you demand to know, brows creased in concentration.
He laughs again and stands.
"Here, let me help you out."
He pulls his sweats down. His cock is hard. So is yours. He pulls you to your feet in front of him and you nearly lose all control. Another spurt darkens the fabric of your pajama pants. He pulls them down and takes your cock in his hand.
"What are you doing?" you ask.
He lines your head up with his and rocks his hips forward. Your cock slides into his urethra, all the way to the hilt. You're dancing on your toes, bladder burning.
You shake your head stubbornly. He places a hand over the bulge in his belly and massages it gently.
"Don't you want to see this get bigger?" he asks.
He grabs your wrist and replaces his hand with yours. You moan low. Another spurt. Then another.
The dam breaks and your bladder cries out in relief. His head drops back and he moans, and as the bulge in your belly shrinks, the one in his grows.
