Labels can be constricting and annoying, but since that's not what Doc was asking about, I'll try to answer the original question.
I'm a guy. I've always been a guy. Just an ordinary average guy. With cuter clothes than most guys.
I've never been attracted to guys and really don't understand how anyone, even gals, can be. Ick.
I've never wished I was a woman, I've never been confused that I might be a woman. Because I'm just not. This is like confusion over whether or not I'm Caucasian. I didn't pick it, I just am.
I've known all this since I was old enough to know I was a boy and not a girl, even before I knew about the different parts.
So I'm not trans, I'm just a CD. At least until mainstream society allows guys the same freedom to wear anything we want that women already enjoy.