I am 20 now, I was 15 at the time.
I had always had a close group of friends. We always joked around with each other about our dicks, jerking off, etc. I had a couple friends who, myself included, loved to show off their cocks whenever they could. In eighth grade our school took a trip to Washington and we stayed in hotel rooms. One night my friend Justin took off his shorts and his boxers and put a shirt on upside down so his cock and his balls were hanging out the bottom. He went around trying to slap us with his dick haha. Me and Ryan took off your pants and we were just running around naked I guess, I don't know what came over us.
Although we often messed around with each other and talked about it, we had never actually jerked off with each other. This all changed one night in Ryan's basement. There was about 5 of us there. We were all bored so we started to watch a porno on Ryan's computer. All of a sudden my friend Bobby whips out his dick and starts beating off. He then reached over and started to rub my dick through my pants as he was still beating his meat. I started to protest, but it felt really good and I figured it wouldn't do any harm. After all, we were just a bunch of horny straight teenagers.
Bobby took my dick in his hand and I started to jack jake off. Jake reached over and started to play with my balls. I had one guy rubbing my dick and another playing with my nuts. Jake was now playing with Bobby's meat. Now most of my friends are gifted in the pants with the exception of my friend Chris, but I have always had the biggest dick out of all of us, so everyone has always teased me about it. My friends Ryan and Cody were also going at it at the same time.
All of a sudden Bobby yells 'Im gonna cum Im gonna cum' and so jake decides to point his dick towards me. Bobby launched about 6 ropes of thick hot cum onto my general pelvic region. This set me off and I came onto my own chest. It wasn't long before everyone had blown their loads. After catching my breath I got up and got a towel to wipe off with.
We've done things like that a couple other times, I've gone even further a couple times, but that's another story.