I don't often agree with Wente but she is right on this.  In almost all cases your a boy or a girl.  That's how it it is unless you be come a eunuch but even then your really just a boy who has had his genitals removed.     

There are people who are born with genitals of both sexes and these people get to choose but the rest of us don't. 

Now your a boy and wear dresses I am okay with that, its your business not mine.  Like wise if your a girl and want to dress like a man.

But...  until you have sex reassignment surgery your the sex you were born with.  To say different is to call blue red.