I ripped open the package the second it hit my doorstep, heart hammering like I'd just stolen something filthy. Plain brown box, no labels, but inside were the thick white diapers I'd ordered after weeks of jerking off to the idea. I was thirty-two, single, and done pretending I didn't want to try this shit. The plastic crinkled loud as I pulled one out, the padding heavy and soft between my fingers. My cock was already half-hard just from the smell of it, that clean baby powder scent mixed with the chemical freshener.
I stripped naked in the living room, no lights on except the streetlamp glow through the blinds. My dick bobbed up fully stiff as I unfolded the diaper. It was bigger than I expected, the tapes wide and the front bulging with that thick absorbent core. I stepped into it like I'd seen in videos, pulling it up between my legs. The padding pressed warm against my balls and shaft, forcing my erection sideways. I smoothed the front, then reached back to tape the sides tight. The first tape snagged, but the second and third locked it snug around my hips. The whole thing crinkled with every breath.
Fuck, it felt good. The bulk spread my thighs a little, making me waddle as I walked to the mirror. My ass looked huge, rounded out by the diaper, the plastic shiny under the light. I pressed a hand to the front and my cock twitched hard inside the padding. No way to stroke it properly; the diaper trapped everything. That was the point. I ground my palm against it, feeling the pressure build, the way the material rubbed back without giving me real friction. Pre-cum leaked out, soaking into the inner lining, making it slicker.
I dropped onto the couch and spread my legs wide. The diaper forced them open. I rocked my hips, humping the air, listening to the constant crinkle. Every movement sent a jolt through my trapped dick. I grabbed the baby powder from the box and shook some down the front, the white dust puffing out the leg holes. It smelled stronger now, mixing with my sweat and arousal.

I reached inside the waistband, fingers sliding over the warm padding, and pushed two fingers against the head of my cock through the liner. Not enough to come, just enough to tease until my balls ached.
The trying was turning me on more than I expected. I stood up again, pacing the room, feeling the diaper sag a little with each step, heavy between my thighs. I imagined someone watching, telling me what a good boy I was for wearing it. The thought made me leak more. I pressed the front down hard with both hands, grinding until the edge of orgasm hovered but wouldn't break. The diaper held it all in, no release unless I tore it off.
I kept it on for hours. Sat at my desk, stood in the kitchen, lay on the bed humping a pillow under the bulk. Every time the urge to piss hit, I held it, letting the pressure build until I finally let a little go. The warmth spread fast, soaking the padding right against my cock, turning the inside hot and squishy. My erection throbbed harder inside the wet mess. I didn't change. I just kept wearing it, the used diaper sagging lower, the tapes straining, the crinkle now a wet squelch with every move.
By the time I finally ripped the tapes open, my cock sprang free, red and dripping. I stroked once, twice, and shot thick ropes across my stomach, the orgasm ripping through me from hours of denial. The diaper lay ruined on the floor, soaked and crumpled, proof I'd tried it. I already knew I'd order more. The trying was just the start. I wanted the full thing next time, the bottle, the onesie, someone to check me and tell me to use it again. My cock twitched at the thought, already getting hard for round two.