My first jackin' buddy discovered an erotic exercise....
One night, I had a sleepover at my friend Bobby's house. We'd discovered masturbating together a couple of months before. We did our deed under the covers, mostly, and had only occasional glances at each other.
We were eleven. Bobby had just started having cum, but I hadn't. My prick was small, and soft, and very hot. We had orgasms that felt good, we both knew how good it felt for each other. Bobby sometimes jumped out of bed and ran to the bathroom with his hard on, for something or other. I think he was kind of an exhibitionist.
Well, anyway, that particular night when I slept over, Bobby told me he'd found a new thing that turned him on. He had a chin-up bar in his doorway, and he said it really turned him on to do chin-ups naked. He jumped up to show me.
As his legs jerked through his chin-ups, he got a hard on. I remember his balls hanging down below his boner. He had to spread his legs and lift his knees to do the chin-ups. He pumped them a bit, and then his prick started twitching, and little spurts came out. He kept pumping his legs while he came.
He wanted me to try it, but it didn't turn me on. Well, I shouldn't say it didn't turn me on, because I got a big boner hanging there with Bobby watching me. But I didn't have an orgasm. Bobby said the first time he tried it, he wore a jock strap, and he got his out of a draw and gave it to me to wear. The jock pressed my hard-on against my body when my legs pumped and that sensation, combined with the excitement of Bobby watching, gave me a climax.
I never forgot the sight of Bobby's pencil hard prick and his dangling balls while he cranked, and my first sight of cum. I've had hundreds of orgasms recalling that moment.