Third gender is a concept in which individuals are categorized, either by themselves or by society, as neither a man or woman. It is also a social category present in societies that recognize three or more genders.Since time immoral, it's been only male or female. Suddenly in the 21st century, we became so advanced that we created a 3rd gender. Mankind really damned steady!
3rd gender sounds better ,if not call them ahgua ,tranny, transformer or tomboy