I'm a guy, my driver's license says female, but that is not who I am. I won't ever put transgendered down as my gender because it makes me uncomfortable. I've chosen not to have surgery for personal reasons, but I have been a guy since I could understand it, and I want people to know me as a guy, cause there's nothing else to think of me as. What is in my pants is irrelevant and, personally, none ya. It can get confusing, i guess, and I've had some people, after finding out I'm transgender, refer to me as she/her or even worse, he/she, it, and vagina boy. -__-
And Cia is right, not every transgender feels the need to surgically alter their body, I'm one of them. I dress like the usual guy, and I guess I'm lucky that I'm small and bodyless, but there are some who do layer their clothes or wear wraps, or attempt to deepen their voice so people don't make them even more insecure.
For the most part, it does make me uncomfortable to be "that transgender". I don't mind using it as an umbrella term, but to have people see me and think "he/she" is unnerving. I'm a normal guy, thanks. XD