I call them cross-dressers, because if they haven't had their plumbing changed, then all they are, are cross-dressers.
I think a cross-dresser is a biological man who has a heterosexual orientation but wants to look like a woman (even when he’s having sex with his wife). So...sick heterosexual puppy.
The transgender-something is a biological man who has a homosexual orientation, but rather than acknowledge his homosexuality he wants to mutilate his anatomy to have sex with men. So...sick gay puppy.