When I first started masturbating at 12, I called it:
"making the scum come out".

In 1950s Australia it was "pulling yourself off". I still use the term.

Pulling my pud

Wow, I haven't heard the word "scum" used
in that context ever since my childhood years
back in the Bronx!

We used to call it "Tossing off"

I didn't call it anything.I just masturbated!

Always a wank.

I called it "special pee" since I didn't know about jacking off and it felt like I had to pee really badly.

I really didn't have a name for it, until a friend of mine asked me if I'd like "to shoot jizz." I had never heard the word jizz before and asked him what he meant. By the way, we were both only 12 years old.

Anyway, he suggested we both take our pants off and he reached over and started to stroke my cock which immediately became hard and I did the same to him. Yes, it felt amazing, more amazing than when I did it to myself. As it turned out, he jacked me first to a dry orgasm and then I returned the favor. His orgasm was dry, too. So, even though we didn't actually shoot any jizz, that's what we called it. And yes, we did it many, many times after that.

I actually didn't shoot any jizz until I was 13, but that's another story.

Beating off

I never talked about jerking off with my friends and for some time I thought that I had discovered something unique. I do remember hearing the term "beat you meat" and "jerking off" but at age eleven I was to shy to ask my friends to explain. I remember a teacher who was mad at a boys health class who yelled if you just want to sit in a corner and jerk off leave now. There were muffled laughs and I felt embarrassed.

Yep, that's what we used to call it in the Olden Days....lol

Whacking off

back when I was in the single digits I called it "warping" my pp and only was while rubbing it on a pillow. It wasn't until I had a cousin over that he showed me to use my hand.

Me and other kids at school used to call it, 'making the white stuff'. But that was a long time ago.