I really can vouch with all my heart that this really did occur.
Although, this is an encounter with another male, both of us 13 at the time, I am not gay, and nor is he. I reckon this was just some fluke of the hormones of the time. Anyhow the story is simple and runs as thus:
One day, I was out and about, feeling kinda down - when I met an old friend, let's call him Matt (not his real name) who I wasn't on the best of knowing terms with, but we went back a long way, maybe 9 years of so. Anyway, we got to talking, and I elaborated on one story of when I was in third grade, and had felt mutually another girl when I was 9 - out of curiosity. But anyhow - the story eventually made him horny, and we were swinging about a tree when he was just like 'damn it - now I have a boner and it sucks.' This of course, led to the topic of briefly asking if we jacked off. It was rather casual, like a no brainier that he did, but he said a lot, and I did too, but not so much as he.
Now - I was turned on for whatever reason, and I brought up the idea, why not here, right now? Funny enough - it wasn't exactly in any hidden area, but we did, and we got down sort of like I had read a long time ago, our legs crossed over the others, and for a while, we jacked each other, and I remember clearly stroking his cock, and he mine, until he brushed my hand aside and went at it his hardest, till he came. I did as well - shortly after, and well, after being relieved; we realized how gay it really was and quickly got dressed.
No matter - it was fun when it happened, and there are no regrets.