Needed To Pee, Needed To Cum

It was the Year 8 swimming carnival at my high school. After the races had finished for our age group, my friends and I sat in the stands and watched the other students. Seeing the boys in jammers and swim briefs, and the girls in bikinis and one pieces was turning me on, and I had a semi-erection under my own tight blue swim jammers. One of my friends, Matt, had bought a lot of soft drinks to the carnival and offered us boys a challenge: drink a lot of soda and see who could hold in their pee the longest. We all took turns drinking the different soft drink flavours, then proceeded to play some card games. One by one, the other boys busted and made their way to the bathroom. Soon it was only Matt and I left. My bladder was bursting at this point. The splash of the pool while our fellow students were racing did not help. I kept fighting the urge to grab my penis as it stiffened, from the sight of all the wet swimwear I couldn't help but glance at. Seeing the outline of the girl's breasts and vaginas, as well as the bulges from the boys was making my dick harder and harder. Suddenly, I felt something leaking out of penis. Pee. It created a small wet patch at the front of my jammers. It was then I knew I couldn't hold on. I quickly congratulated Matt and rushed to the change rooms, feeling my full bladder with every step. Luckily, the change rooms were right next to the stands. As I rushed to the closest stall, I could feel short bursts of pee coming out of my penis. I was so desperate to go that as soon as I locked the door of the stall, I just sat on the toilet seat straight away - I didn't have time to untie and pull down my swimsuit! As soon as my butt hit the seat, I could finally relieve myself. Warm urine flowed from my boner, making the small wet patch at the front of my swimsuit bigger and bigger. Pee flowed everywhere - I could feel it washing over my balls, around my hips and onto my bum. After what felt like Niagara Falls had left my body, I looked down at my swimsuit. My blue jammers were now a darker colour, with only a small section at the end being dry. I looked into the toilet bowl and seeing the yellow pee spurred my mind and gave me a strange fantasy. I imagined that Chloe, a pretty blonde girl I had a crush on, had stepped into the stall with her red swimsuit on. Then, she proceeded to pee in her suit right in front of me. Pee trickled from the crotch of the swimsuit onto the floor and splashed my feet. I have no idea how I thought of that in the moment - it was just a random thing. The image of Chloe drew my attention back to my dick, hard as a rock. Instinctively, I untied the strings of my swim jammers, grabbed my four inch cock and pumped away with my pee stained right hand. It only took me a minute or so to cum. Usually when I cum, it doesn't travel far, but on this occasion my first rope flew past my shoulder - guess I was really turned on that day! The remaining ropes landed on my chest and stomach. What a cool experience. I cleaned up as best I could and went out of the stall. At the entrance to the boy's change room, Matt rushed in and went to the stall I had just vacated. As the door closed, my mind began to wonder what Matt was doing behind it and soon I was hard again.