abbreviation for 'Fucking Useless Bastard'. Said to someone who can't do anything for themselves. A low life person who might as well dance in a fire.
Dan: "Did you see that article about that woman who got stuck on the expressway during a snow storm and thought she was gonna die?"

Eddy:"Ya woman is a FUB, ya feel me?"
by ERu07 February 22, 2013
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FUB = Fun Up Bitch! Similar to have a good time but more for College and highschool teens.
Sydney texted Kyle saying she was going to a Frat Party at the Delta House. Kyle replied #FUB(Fun Up Bitch)
by Atlas Morningstar December 1, 2018
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"Did you see that bird Nelly was with t'other night? She was a fub!"
by oldham matt November 24, 2008
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Friends with benefits.
instead of saying fwb, because it's hard to say.
Miley Cyrus is my FUB.
by hseprjofkl;er September 27, 2009
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Y'all got it ALL wrong. It's Fuckin Underage Bitches.
Damn man, did you see all them FUBs at that CSC party on Fourth?
by Billy February 16, 2005
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Fruman bee. The best fucking wynncraft guild to ever exist.
- guy 1: I am in FUB
- guy 2: HOLY SHIT YOU ARE SO COOL!
- guy 3: OMG CAN I GET AN AUTOGRAPH
by french_bread_gud November 19, 2021
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