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1.
AF
The acronym stands for 'as fuck.'
That dinner was good AF.

Translation: That dinner was good as fuck.
by Mr McDownage October 10, 2011
 
2.
a'f
abbreviation for "as fuck". typically used as an adjective.
John: Its 4 in the afternoon, and Will is still sleeping.
Jake: Dude, he's lazy a'f.
by GetOffYourLazyFatAssAndWorkout December 24, 2011
 
3.
af
Abbreviation of "As Fuck" be sure to use an apostrophe because you'll confuse people whose initials are A.F.
Guy 1: You're sleep af

Girl 1: is that as Fuck or are you using my initials ?
Guy 1: As Fuck why would I use your initials stupid girl.
by nonewfriendsnononoo June 25, 2014
 
4.
a-f
1. anti-flag, an anarchist punk band.
2. anti-flag's record label.
"Hey, visit anti-flag.com, it's awesome.."
by afi March 09, 2004
 
5.
af
The retarded way of saying "as fuck". It is an annoying acronym that mostly ignorant teenagers use. In my opinion, it is stupid AS FUCK. It shouldn't be too hard to type out two words.
Dumb ass: That party last night was bomb af'
Intelligent asshole: What the hell is af?
by asshole:) August 13, 2012
 
6.
AF
Agnostic Front

New York Hardcore Punk/Metal band.
They rip.
by Paul Della Valle April 21, 2004
 
7.
Af
A phoenitic blunder in pronouncing the word Ass.
Yo' Stal, dat dime pief ova der got a big AAAAAAAf
by Don Jaime October 15, 2003