It was one of those lazy summer afternoons where the air was thick with the scent of chlorine and sunscreen. My stepdad, a jovial man was up to something. He was always the prankster, and for some reason he had been tinkering with something in the garage earlier, muttering about a surprise for Jason, my stepbrother. A good surprise or a prank, one could never tell.
I hadn't thought much of it until Jason emerged from the house, clad in a sleek black swimsuit that hugged his lean frame like a second skin. It wasn't really an unusual sight. Jason had been on the swim team and I had gone to a few of his meets. Our parents married last year and they moved in with my mom and myself. We were both seniors at the local high school and at 18 years old we were both getting ready for college.
"Check this out," Jason said, striking a pose by the pool's edge. "Dad said these are the latest in swimwear tech. Supposed to be super comfortable."
I rolled my eyes, smirking. "Looks like something out of a sci-fi movie. You sure it's not going to weigh you down or something?" The suit looked very high tech. It came about halfway down his thighs with a zigzagging pattern that crossed through them on the sides and across the top.
Jason laughed, splashing me playfully. "Nah, Dad said it's cutting-edge. Let's see if you can keep up with me in the water." Jason knew that I couldn't match his speed. I was more of a wallflower, nothing like my outgoing, popular stepbrother, but I jumped up and dove in after him.
We spent the next hour swimming laps, racing, and goofing around. Jason was always competitive, his toned body slicing through the water with ease. Jason and I, even though we had gone to school together, didn't really know each other before our parents started dating. Our school was one of the biggest in the state, so it wasn't surprising not to know someone in your graduating class. We had warmed up to each other over the past year, since our parents married, but we still didn't hang out. Our close proximity and the few vacations we had endured together had made us grow into a family and seeing as I didn't have any other siblings, Jason was as close as I was going to get to a brother. Even if getting to know him so late in my life made it still more awkward than brotherly.
We played in the pool for about an hour, when I was exhausted and took my things to a nearby chair. Jason did some laps and the afternoon calmed, the heat still blistering overhead. However, things took a turn when Jason climbed out of the pool, shaking his head like a dog. I was lying on a towel, half-dozing, when I heard him gasp. "Uh... guys? I think something's wrong."
I sat up, squinting against the sunlight. My jaw dropped as I realized the swimsuit Jason had on was dissolving before my eyes, leaving Jason standing there in nothing but his birthday suit. His hands flew to cover himself, but it was too late. I'd already seen everything. The veiny cock and in his attempt to cover himself his muscular ass as he spun around. His dad was on the patio and Jason was looking up at him. Clutching himself in the front with one hand and shielding his ass with the other.
My cheeks burned as I averted my eyes, my heart pounding in my chest. I'd never seen a real cock before--not outside of those awkward health class diagrams. Jason's was... impressive. Thick and long, it jutted out from his body, the tip a deep pink against his tanned skin. His balls hung heavy beneath it, and I could see the faint veins tracing along his shaft.
"Shit, Dad," Jason muttered, his voice tight with embarrassment. "This isn't funny anymore."
My stepdad burst out laughing from the patio, where he'd been grilling. "Gotcha! Well that worked a little better than I expected. I thought it'd just come apart a bit at the seams, not... well, this."
Jason glared at him, his face flushed. "Thanks a lot. Now I'm traumatized for life."
I stood up, grabbing my towel and wrapping it around myself, though I wasn't the one exposed. "I'm... gonna go inside," I mumbled, rushing toward the house. Jason's dad threw him a towel as I raced past him on the patio. My mind was a whirlwind, replaying the image of Jason's cock over and over. It was both shocking and mesmerizing, and I couldn't stop thinking about it.