I believe the idea is everything is Male or Female.
Nothing covers the growing list of "its" and "WTFisthat!'s"
Wont be long till we have men selling their testicles to women so they can call themselves "feminine" but the women who get the balls can have them surgically grafted to the side of their heads above their ears, give themselves a fancy name, require special rights, and then demand that we accept that and that they are perfectly fine and normal. lol