I'm glad there are two others here who have been doing it basically all of their lives. I am the third. I discovered masturbation at around 6, like when I actually realized what it took to make an orgasm. I thought I had discovered something that no one else knew about hahah. Finally at about age 10 I embarassly asked my mom about it and she gave it the name masturbation. I remember being so relieved that it had a name and that I was therefore normal!
It's grrrrreat