The reason all the commercials featuring happy families, show heterosexual relationships. The reason that if you say, "I'm seeing someone" a person might automatically ask who the person is, referring to them as "she" if you're a boy, or "he" if you're a girl. It is the belief that only male/female relationships are "normal" and that everyone falls into two distinct categories: male and female. It is the assumption that a girl will grow up and marry a man, and that a boy will grow up and marry a woman.
Friend: "Who's your crush?"
Boy: "I don't want to say."

Friend: "Come on, tell me her name!"

Boy: "...it's a he."

Friend: *shocked* "Ohh...sorry"
Boy: "It's not your fault. It's just that we grew up in a world ruled by heteronormativity."
by I_write_books August 7, 2017
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heteronormativity “sad day for gays” it’s a totally made up word of straight up discrimination.
by Willis did it June 20, 2021
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Someone/a group of people that feels the need to make everyone around them heterosexual. Someone who desires to make being straight the norm, therefore oppressing LGBTQ+ people. Such inhumane actions and opinions affect this community in several ways, including normal day to day tasks. A heteronormative society may also decline human rights to these.
John: It's so weird how when I tell people about my relationship with my boyfriend, they ask who's the girl and who's the guy in bed!
Sara: Yes, we live in such a heteronormative society.

Hayley: Me and Jane visited our wedding planner today and we had to leave because every option they had was for straight couples!
Jacob: Yikes, i hate heteronormative wedding companies.
by clink clink bitch March 11, 2017
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