I was younger and was in taking a bath. I was laying on my back and washing up with a wash cloth. As I rubbed my penis, it kind of tickled and I had never felt this previously. I continued to rub beyond what was required to clean myself. The tickle grew stronger as well as my penis growing bigger. My penis had gotten hard before but it was I disliked because it would get pinched etc. and I'd have to fool around with it to get it to lay just right so it would no longer be uncomfortable. I didn't understand why it got hard but was always too embarrassed to ask my parents and it only lasted for a couple of minutes and then went away.
After several minutes of rubbing my erect penis, the tingle got pretty strong and it kind of scared me. I stopped what I was doing and tried to concentrate on washing elsewhere but my penis remained erect and soon a desire to feel that tingle came back, so I again began rubbing my penis with the wash cloth. Naturally this was a lot of friction and of course I was rubbing myself right on the "spot". Again the feeling became really intense and again it scared me, so I stopped and finished bathing and got out of the tub. I went into my bedroom and got some cloths out but again the desire to rub my penis overtook me.
I lay down on my bed and began to rub my penis, only this time with the palm of my hand. This too created quite a lot of friction and it wasn't long before the feeling grew very strong, but this time I couldn't stop and I began ejaculating. This new phenomenon in combination with the orgasm, both of which I had never experienced before, scared the daylights out of me. I thought I'd really screwed something up inside me. At first I thought the semen was pee because it was pretty clear, but when I put my finger in it, it was thicker and I didn't know what it was. The orgasm was something I had never experienced and I thought I was going to pass out.
I waited for 3-4 days to see if I would die or at least get sick, but nothing negative happened and within a couple of weeks, I repeated the masturbation. It wasn't too many months after that that we had a sex education class which explained a lot of what I'd experienced and I felt a lot better about it. It's funny though, I don't remember this class describing an orgasm per se, and back then in the 60's it was pretty primitive stuff but I don't remember them saying that girls had "intense pleasure" like boys did and that most boys masturbate but that very few girls did, which is why I'm interested in a woman my age discussing their thoughts and feelings and how they've changed through the years on masturbation.