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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The intense banging of two peoples palms that is an alternative to sexual intercourse.
Dave: Hey tom, smell my palm.
Tom: (sniffs) dude that smells! you fub that girl at the coffee shop?
Dave: Oh fub yeah. I fubbed her so hard she got carpal tunnel syndrome!
Tom: Fubbin' awesome dude!
(Both high five, but secretly are actually fubbing eachother.)
by Robbles the wise one June 3, 2011
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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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A conbination of 'fab' and 'good', pronounced when you say good and think of 'fab'
person 1 'aw man can't wait for the party on saturday!'
person 2 'yeah me too, it will be fub'
person 1 '..... ok dude'

slang
by fransancisco August 11, 2014
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wow that is a fubulous train man
Fub your outfit
FUB!
by Ed Frans April 19, 2022
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An uncomfortable moment where you bend your penis in an awkward,and usually painful, angle. Commonly occurs against a partner's pubic bone.
I was having sex with this girl, slipped out, and began fubbing against her bone.
by Understated_Guy December 29, 2016
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