As kids we used to play climbing lampposts. I found that by slowly climbing, almost in the same spot, I had a fantastic climax. As I was prepubescent, I had no ejaculation. It was fun. Then the inevitable happened. I was at my usual and when the climax came, to my horror and surprise, a flood (as I thought) filled my pants. I had to make excuses and go home to change.
After that, I had mutual masturbation sessions with many different boys on the way to school ,on the way home from school, at the cinema, anywhere the opportunity offered itself.