I can't remember exactly but I'd say around 12 also

12 too, it seems like a popular age.

12 too!! yaaay

Think it was around 7th grade,,so around 12 I guess.

I was around 14 or so.

Yep, 12 as well. It is a popular age.

I was four.

between 10 and 13. i don't remember exactly. i do remember where i was! i can close my eyes and see my dick in my hand that first time. funny what images get stuck in a person's head.

The first "clear" memory I have of masturbating is when I was about 5 and my mother entered my room while I was doing so I was ashamed but she reacted well, like I was just playing and then left the room, though I know I masturbated since a long time before that (because in fact I remember masturbating before that) and I think I discovered it by myself when I was bored.
I don't know what made me ashamed of masturbating and scared of being scolded, though. Maybe it happened before that she entered the room and scolded me but I forgot?
Still it's a very strong memory, and I remember the feeling as well even though it's not so strong now; more recent ashamed memories I try to forget, but it's not hard on me to remember this one.

I'm going to look like a freak but I was 18 or 19. Late bloomer.

Around 10 I think

12...and the memory of the first time is vivid

I think I was around 7 at the time.

I think I was around 11 or 12?

wow.. i can't remember an exact age but I know it was way before 12. I didn't really think but about what I was doing. I just knew to hide it.

Want to say I was about 13 or so. Stole my brothers Penthouse but it was the photoshoots. On the back few pages there were these little smutty pics for the phone sex numbers. That was my "first time."

Not sure exactly, around 12 or 13.