umm I ran across a site that says gender is between your ears and sex is between your legs
but i guess wat i'm sayin is why doesn't someone just say they're a "tom boy" or a "sally girl" easier than sayin transgender or sissy which i gess some ppl don like to be called a sissy
alot of words have more than one meaning and I remember that when a boy in my school was called a sissy he was refered as to being week and unable to do things not sissy in the way of wearin frilly dresses an such or that he acted like a girl
but me I'm a girl, a shy one in person but a lil open online. but maybe those are some good Ideas