Jake pulled the thick white diaper up between his legs and taped it tight around his waist. The padding hugged his cock and balls, crinkling loud every time he moved. He knew what tonight was about. His buddy Mark had texted him earlier: "Bring the diapers. I'm using you as my personal urinal and then wrecking that ass."
They met at Mark's place after dark. Jake stripped down to nothing but the fresh diaper. Mark looked him over, grinned, and shoved him onto the bed on all fours. "Stay just like that. Diaper stays on until I say."
Mark stepped up behind him, unzipped, and aimed his cock at the back of the diaper. A hot stream of piss hit the padding right over Jake's ass crack. The diaper swelled fast, soaking through and turning warm and heavy against Jake's skin.
Piss ran down the inside, pooling around his balls and soaking the front until the whole thing sagged. Jake groaned and pushed his ass back into it, feeling the wet bulk press against his hole.
"Feel that?" Mark said, shaking the last drops onto the already drenched diaper. "That's your new urinal. Now spread those cheeks."
Jake reached back and pulled the soaked diaper aside just enough. Mark's fingers found his hole, slick with piss that had leaked through, and shoved two in without warning. Jake grunted, pushing back, taking them deep. The wet diaper squished against his thighs with every thrust of Mark's hand.
Mark pulled his fingers out, wiped them on the front of the diaper where Jake's cock strained, then lined his own thick cock up. He yanked the leg band aside and drove straight into Jake's ass. The diaper stayed on, bunched and dripping, rubbing against Jake's balls while Mark fucked him hard and steady. Each thrust made piss slosh inside the padding and leak out around Mark's cock.
"Fuck, it's so wet," Jake panted. "Piss me again while you're in me."
Mark didn't answer with words. He pulled out just long enough to let another stream of piss flood the open diaper, then slammed back in. The fresh heat mixed with the mess already inside, running down Jake's legs. Mark kept pounding, using the soaked padding like extra lube, his balls slapping the heavy front of the diaper.
Jake came first, shooting into the piss-soaked front while his ass clenched around Mark's cock. Mark followed right after, flooding Jake's hole with cum that immediately mixed with the urine already inside the diaper. He stayed buried deep, grinding the mess around until everything was a hot, sticky slurry against Jake's skin.
When Mark finally pulled out, he taped the diaper back into place, sealing the whole load inside. Jake stayed on all fours, feeling the heavy, squelching weight between his legs. Mark gave the sagging padding a firm slap.
"Keep it on till morning," he said. "Next time I need to piss, you're the urinal again. And that ass stays ready."
Jake nodded, already getting hard again inside the filthy diaper. The night was just starting.
