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This stands for *Must Be Nice* a lot of people use this when they see other people in goofy or cute relationships.
MBN 😍😭 wish I had a bae.
by TheRealBeale 🀩 October 07, 2018
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1) Stands for "mus b nice", representing jealously of something someone can do that you cannot
Kyle: I'm going to go out tonight
Justin: mbn
Kyle: Talk to you later, with friends
Justin: mbn
by Justin Glucose October 28, 2016
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must be nice..........
GuyA: Damn I'm full, huge steak dinner.
GuyB: I'm eating chicken Ramen, mbn.
by wikked January 06, 2005
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1. stands for "must be nice" and used sarcastically when someone tells you something that makes them sounds wealthy, carefree, or conceited.
Wealthy Chick: My parents, my sister and I are going to Aruba for Christmas for a week then to Argentina and Brazil to spend the New Year.

Poorer Friend: MBN! shit!!!

Wealthy Chick: What does 'mbn" mean?

Poorer Friend: it means that it Must Be Nice, mutherfucka! Tell your parents to hook ME up!
by El MuΓ±eco December 08, 2005
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Bestfrannn wanna come ova an chill
Bestfrannn wit a bae naw bae takin me out

Bestfrannn awe mbn
by QveenArii November 19, 2017
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Acronym for MUST BE NICE. Usually used on Facebook when someone posts pictures of a fancy car or house.
Brian: Check out my $68,000 Honda

by BAUWLUH August 17, 2011
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