We used to have two metal poles on the playground in elementary school that all the boys would race each other up during recess. This was only in the early 90's, but no way in hell would those poles be allowed at any elementary school now lol, too dangerous.
Anyway occasionally when racing up those poles I'd get the most amazing feeling. Obviously I wasn't old enough to understand what it was or to ejaculate but I certainly remember that feeling and it was amazing. To be honest I remember it feeling better than my orgasms now, as a grown adult, which I don't understand either.