A phrase, similar to "no homo", made when a sexual innuendo is implied but not meant to be in any way sexual. (Utilized between opposing genders)
Girl: Thanks so much for sending me the powerpoint!

Guy: No problemo, anything for you Sally, no hetero ;
by Jo Singh November 4, 2009
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Phrase used to describe something which is not heterosexual, it would literally be applied toward homosexuality. It is, however, more often applied pejoratively to negative situations, being used in place of gay when saying that something is lame or stupid.
Dude, you ate all of my donuts? That is so not hetero.

Seriously, guys, you need to stop talking about how often you watch America's Next Top Model. It's not hetero.

When Jess and Steve sit together on the bench with their arms around each other, I want to say it's seriously not hetero, but I know they're straight.
by Talmanes December 2, 2006
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When two platonic friends of opposite sexes partake in a potentially romantic or sexually stimulating situation, uttering the phrase to negate any romanticism/sexuality.
Guy: (accidentally slaps girl's ass) Oh, I'm sorry.

Girl: It's ok. No Hetero.
by Hiphopanonymous315 August 27, 2011
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When a gay person says something straight but the gay person doesn't want to give off a straight impression because he/she is not straight.
Ggay dude: You are a good looking girl No Hetero
Girl: Are you gay?
Gay dude: Yes that is why I said no hetero.
by Gozzy August 5, 2008
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someone that experiences sexual and/or romantic attraction to the opposite sex.
Is Lucy hetero if she's also ace?
Yes, because shes strictly romantically attracted to men.
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A phrase used, in jest, to cancel an inadvertently made, ambiguously heterosexual statement.
by Curious December 4, 2006
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Said after someone says something that sounds unintentionally heterosexual.
Her ass is mine. No Hetero!
by Comatose Carl November 14, 2010
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