@ anon that said gender is made up, so is sex. Literally everything you know is a social construct. As a duck what its sex is, what month is. They don't know, and genitalia exists on a spectrum. Ask a doctor that delivers babies and they'll confirm; they see plenty of ambiguous genitalia. You can't put sex in two narrow boxes the same way you can't with gender. Humans don't operate that way. And just like feminists before you have said, biology isn't destiny. Stop acting like it is.