What is a zerophiliac?

Answer 1

Zerophilia is a condition which causes something to change gender. Though no mammals exhibit zerophilia, some amphibians can change sex when their population doesn't have enough of the one sex to propagate the species

Answer 2

A zerophiliac is a fictional concept from the movie "Zerophilia" where individuals can change their physical sex at will. It's not a recognized medical or psychological term.