There was a "person" in one of my classes in college. White person, long hair, feminine features yet large frame (kinda chubby). Always wore baggy jeans, hoodies, jackets, etc. Had a high-pitched voice (for a dude) or a low-pitched voice (for a woman). Even had a unisex name like "Terry" or "Pat" or something. To this day I don't know if that classmate was a man or woman. Never bothered to ask because, well, that would have been really awkward.