Short form for Fuck Ass Bitch. Normally an attempted insult from someone who is too stupid to actually make one up so they strung together 3 random swear words
Guy 1: Haha dude you are such a fag
Guy 2: Fuck you fucking .. Fuck ass bitch
Guy 1: Fuck ass bitch? What does that mean? Can you tell me because apparently I'm a fuck ass bitch? Instead of maybe fag I'm a FAB?
by LemonGrenade October 10, 2010
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Many Different defintions, but they pretty much mean all the same thing:

Fat Ass Bitch
Fuck A Bitch
Fat Annoying Bitch
Fat Asswipe of a Bitch

Can also be used as a slang term for "fabulouse"
by Caroline Manuel May 26, 2007
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FAB: short for fat ass bitch, can be used towards teenage girls without them knowing they are being insultin. Latin root: Fabicanisus, the goddess of fried foods
She is such FAB, she shut down the all you can eat buffet within a few minutes.
by Austin Forty Duece March 1, 2008
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You are FAB and will never be worth a shit
by cdma69 September 21, 2009
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Fake ass bitch; used to disguise your hatred towards someone in a more pleasantly sounding tone
"That Sara girl is so FAB"
by jjt1720 December 12, 2016
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that quebec girl is FAB, oh and that mexican guy too
by xXPapiChulo47Xx February 24, 2009
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Fat Ass bitch
Short for fabulous
A way of calling someone gay without them knowing it or hearing
Fuck a Bitch
But mainly...
Fuck and Buck!!!
or Fat Around Bitch
Yo, dat female is a FAB! goddamn.

That dress is just FAB.

Da fuck, iz dat nigga fab.?

Fab in the ass, she'll cry.

Ayo, i'm bout to FAB yo female tonight.

Man she a FAB, no lie, look at her. I wouldn't tap dat for a million.
by DamnIt69 May 11, 2010
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