I had just turned thirteen when my close friend and I began having about four or five inch hard ons about the same time but we had yet to learn what to do with them. I learned how to jerk off and cum before he did and I showed him how to cum and we did it together a few times after that.
After lunch one day I was super horny and wanted to beat off. My parents were in the living room so I quietly slipped into the bathroom, closed the door, sat on the toilet and pushed my pants and shorts down to my ankles. When I would cum I usually pushed my dick down and let cum shoot into the toilet so I didn't have to clean the floor.
I had just got started when the door popped open. Dumb me... I had forgotten to lock it. Luckily it was my friend and not one of my parents.
I couldn't hide what I was up to and my friend said he had guessed what I was doing in the bathroom anyway. He quickly said he had been half hard all day wanted to beat off and cum too. He said, 'Slow down and I'll join you'. As soon as he dropped his pants and shorts to his ankles and sat on the tub he was already hard and ready to go.
We hadn't been jerking off for more than a month so we usually didn't last more than a minute or two. In less than a minute he asked me for some toilet paper so he would have something to catch his cum. I handed it to him and he started stroking really fast. I wanted to see him cum first so I slowed down a bit. In no time he said, I'm about to cum if you want to see it shoot. His cum shot off about four times and watching him cum shoot triggered me to start cumming even before he finished.
We wiped ourselves clean, pulled up our clothes and went outside to play. We really didn't think about it as sexual, it was just young boy stuff having fun.
Shortly his parents moved away but we did get together once or twice a year or so later. Do I think about it at my age? Quite often when I'm alone! I doubt I'll never tire of seeing cum shots.