It is like swearing on your mums life, but instead, a way to get around it.
"Bro did you fuck the dog?" "Muns life I didn't"
by mihailopupovac November 24, 2022
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Referring to money... usually used to talk about pay for laborers.
“Hey Tyler(owner of a lawncare business), when will I get my mun???
by Lukekhockey55 November 13, 2019
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man bun clown hair tribal want to be fool hairstyle I look stupid hairstyle fail hairstyle
"honey check out that sweet man bun, that guy is proud of his clown hair"
"I like to call that a mun"
by Psibri April 24, 2018
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Short for Model United Nations, or Model UN. One of the worst clubs to join in highschool, very cult-like, would not recommend…
Matt: “Yo I just joined that club MUN”
Sarah: “I heard Model UN is hella weird”
by mshahonlydubs April 2, 2023
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From Sydney Church of England Grammar School SHORE

meaning 'as if', if a person is lying then you could say mun, as in that person is being a bit of dick and making shit up
Nic: I'm a heaps good skater

Mike: Mun you're a pro skater
by lilwhitey November 30, 2010
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