I've never got what "trans" means. It's the last of the letters in LGBT but what does it actually mean???
Transexual, I was born a male technically speaking, but I've always felt and acted as a girl. So I'm going through hormone replacement surgery, Feminine facial surgery, adam shaving (although my adam's apple isn't that big), voice training, and Sex reassignment surgery.
It's more than actions, it's how you feel. Most of us have something called dysphoria, which is similar to self loathing. To dumb it down for you, it's like looking at your penis and then bursting into tears because of it and being driven to the point of suicide.