My first cumshot caused by a stuck... good times. I cummed on the neighbour boy’s back when he gave me a ride on his new 125cc dirtbike and buried it in 3 foot deep mud in the irrigation ditch. We were both 13, and he was probably my first crush. I boned up as soon as he offered the ride; I know he felt my cock throbbing on his lower spine every time he laid on the gas. As he drove into the ditch and the bike sank in, he pushed my hands down from around his waist onto his crotch, where he had his own hard-on. He wasn’t big, but I guess he was running pretty hot himself; I remember feeling his dick surge and pulse as he squeezed the throttle and the bike tire fully submerged in the mud. Between the vibration of the bike and feeling someone else’s boner for the first time, I just lost control and unloaded, forcefully. Shot through my briefs and shorts, onto the back of his t-shirt. I let go and jumped off the bike, embarrassed AF.
It wound up being the last time I ever saw him. He went home with a cumstain on his back and his dad lost it, called my parents and told them I was a fag and molested his son and other nasty shit. It’s too bad, because he probably would have been fun, judging by how hard that cock of his was when he had me feeling him up.