I have never written anything like this before but I thought I might share a story. When I was 17 I had a really good friend, been mates with him for years. Anyway we had discussed jerking off and knew each other did it. So anyway, on this particular night he was crashing at my place. Out in my backyard, we have a huge box thing. We usually sat on this and just talked about life. Tonight was a bit different.
Talk turned to sex, particularly his lack of sex from his current girlfriend. He said he was horny, I was horny so we decided to get to know each other better and ask questions. After the first few he turned to me and said 'I can only think of sex questions'. So it started, the usual where have you done it, how many times in a day, ever been caught, etc. Talk then turned to more dare type things. First he dared me to wank for 30 seconds and moan out another friends name. Then I told him to do the same. Then he said 'I bet you wouldn't cum on that fence over there'. To my surprise he jumps onto the ground and says I'll do it if you do it. So we go over to the fence and just stare at each other. 'You go first' he says. We go at the same time, and just pull our boxers down a little. We go at it. He jokingly starts moaning out our friends name. We laugh. Then silence. I glance over and watch the expression on his face change. He grunts and then bucks. 'I win' he says. I don't believe him so I say 'Show me proof'. We search the fence post for his cum. I see it, loads of it. He says 'Now show me yours'. I return to my post and finish. He checks and then says 'Gross'.
I think it brought us closer as friends. It was a good bonding experience.