heteronormative : Those punitive rules (social, familial and legal) that force us to conform to hegemonic, heterosexual standards for identity.
Get it? No? Okay, try this: It’s a word to use when you’re trying to make people feel bad about being straight.
If you want to up the ante, use it in conjunction with “patriarchy.” If that doesn’t clear the room, I don’t know what would, except maybe yodelling.