It's quite simple. An acronym for Fist Up Bum. Get it? I'm sure you do.
Shut your face or I'll fub you.
by Mongel Child June 20, 2005
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If you dont like cursing, FUB means eff you b**. It came to origin because someone said eff you B, and another person responded, Fub?
"Your so lame, you dont even curse"
"Fub"
The other person just got owned
by i pwn u 2 February 18, 2010
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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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It means " I'm F*#ked Up Bro", just feeling super weird.
I was hangin with the boys tonight and we hit about 5 reggies and drank beers all night and i was just #FUB , couldn't walk or do anything.

Just hung out with my friends and got #FUB and chilled all night watchin movies and playin video games.
by smitty ktwon reppin August 20, 2011
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crush; A guy/girl that you are crushing on, but you don't want to like that person. So you want to have the fub ended right away.
Tyson is Tori's fub, but he is a preppy jock who is an A**-hole.
by April March 18, 2004
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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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Fuck Buddy
- A friend or acquaintance that one engages in sexual activity with on a "no-strings-attached" basis ...
"So what's up tonite? A little time with your FuB?"
"Ya ... I'll probably be busy until about 10, then we can go do something after ..."
by Duck Williamson January 10, 2004
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