Sex was never talked about in our family. Even in my teen years, when I asked my dad how babies were made, I got the brush-off.
I don't remember exactly how old I was when I had my first hard erection. I do recall I was playing catch outside with a female cousin who was a year older than I. I had loose shorts on and the bulge was quite noticeable, but I had no idea that would cause a stir until my mom came out and told me to 'put myself down.' I had no idea what she meant so I just sat on the porch for a while.
Anyway, some time later (I think I was around 12) at home, I was sitting on the toilet and got an erection (who knows why). I held my cock in my hand and then began to squeeze the underside with my fingertips and thumb. It felt good so I kept doing it and it felt better and better until all of a sudden I throbbed and squirted a load onto the wall across the small room.
I was really shocked and thought I had broken something, but nothing hurt. Of course my erection went away and I didn't think much more about it until the next time I was in the bathroom. Each time, for a long time after that, I would masturbate that way every time I went to the toilet. It was probably at least a year until I discovered a 'more efficient' way to jerk off, by stroking. I still had no idea what I was really doing or the reason for it happening.
Back in those days there was no sex education in schools and I don't remember any 'guy talk' about sex. So when I graduated from High School, I still had no real idea what sex was all about. I was lucky that in my late teens, whilst I had girl friends and we 'made out', we never got intimate or I surely would have gotten someone pregnant just because of my ignorance.
So to all you parents and future parents out there, talk to your kids about sex, (SAFE SEX!) and that it is OK to masturbate.