1) Gender 2) Non-heteronormative one 
A gender bender or one who genderfucks is a person who actively rebels against, or `bends,` expected gender roles. Gender bending is sometimes a form of social activism undertaken in response to assumptions or over-generalizations about genders. Some gender benders identify with the gender assigned them at birth, but `challenge` the norms of t...
Gender-bender is slang for a transvestite, a transsexual.