Kobra's bladder is small, anyway. It really doesn't take much to fill it up until Kobra's fit to burst. Party even offers it their own canteen as a goodwill gesture.

Their intentions are anything but good.

Kobra is sweating more than usual after a few more drinks than it can handle. Water and alcohol go straight through it, and they both know it. Kobra shifts uncomfortably in place a minute later. Kobra is stubborn, though, continuing to drink water at Party's behest. Their eyes are dark with lust as they push Kobra into taking another sip.

Kobra can feel it once the canteen is empty. Its bladder aches, panging and cramping under its tight leathers. Party slides up behind Kobra and gently massages its stomach.

'You're okay, Key. You'll be fine.'

Kobra's thighs squeeze together, and the shaking doesn't take long to become obvious. Kobra is making little noises of pain, now, and it tries not to move so its bladder doesn't give out. But Party is plastered against its back, cupping Kobra's swollen abdomen lovingly.

'Gotta—' it tries to say. Party shushes it.

'You aren't going to piss yourself, right?' they ask sweetly.

Kobra wants to deny it, it wants to say that it can control its bladder, but it knows that it would be wrong.

Kobra doesn't control its bladder. Party does.

Party presses down on Kobra's abdomen, kissing the back of its neck at the same time. Kobra cries out, squeezing its muscles and clawing at Party's arms. They press down harder, and Kobra feels a few leaks.

'Please, please, please, please,' it begs on loop. Its brother just laughs at it. They grind against Kobra's ass as they push again. Kobra can't take it. Kobra can't— it can't—

'Piss yourself, Mikey.'

And Kobra's body gives out. Its piss is warm as it releases it all in a rush. Kobra sobs as its muscles give out, making Party support its full weight. It's still peeing, its piss completely trapped by its leather. None of it can escape as it runs down its trembling legs. Kobra's piss fills its boots and it's disgusting, really, but Party is humping its ass like they've never seen anything hotter. They're moaning against Kobra's ear, and finally— finally!— Kobra's bladder is empty.

Party's moans get louder as they hump Kobra faster. Their cock is trapped in their own tight leathers, and as Party comes, Kobra knows their crotch will be sticky with their spunk until they can be forced into a shower.

'Piss boots,' Kobra grumbles at Party. Party giggles.