F'er 

An abbreviation of follower. Plural = f'ers. Looks funny because people tend to read it as 'fucker'. Used a fair bit on Tumblr.

brinheartsharry reblogged hogwartsneverwrote:

REBLOG THIS IF YOU LOVE EVERY F'ER YOU HAVE!

F'er by Rina Lam December 6, 2011

F.L.E.X.

Noun.

A Clan on Xbox live comprising of Hackers and Trolls. An overall less than average clan with the exception of hacking.

Adjective. (F.L.E.X.er(s))
Used to describe malicious players in Call of Duty: Black Ops, or other Xbox Live compatible games.

Verb. (F.L.E.X.ing)
Showing off how good you are at Hacking and Trolling in the above-mentioned Games.

N.
"The F.L.E.X. Clan is full of cheaters!"

A.
"John McCain is quite the F.L.E.X. er"

V.
"Hobowner loves F.L.E.X. ing"

F.L.E.X. by Purebro69 December 29, 2010

F.a.S.b 

Fetal Attack Squad Bitches
Name given to the female members of the F.a.S

jenna jo, kelci jo, sami jo, acst...j, rika suave, zena, heyn

F.a.S.b by Urban Dictionary June 6, 2003

f utarted 

when someone you know is acting f*cking retarded. pronounced fa-tard

Kate: wait, so you mean? wait, what do you mean?
Patty: Kate stop acting so f utarted!!!

f utarted by G.G.G.B May 13, 2008

F.O.B 

Two Definitions:

1. Fresh Off the Boat
2. Family Over Bitches

Look at those fobs they hella dummmy bruh.

It ain't M.O.B, it's F.O.B; family over bitches cuhz

F.O.B by blaccjacc January 31, 2009

F.U.B.A.R.

ADJ. foo`BAR

An acronym for Fucked Up Beyond All Reason. Used commonly for situations of extreme desperation.

Dude did you see that shemale that was all over Jack?

Yeah that was pretty F.U.B.A.R.

F.U.B.A.R. by YOUR DADDY April 18, 2003

F.U.N. 

F.U.N. is an abbreviation of Fuck You Nigga. It was invented by rapcore/hardcore band Boxcutter.

someone black: what?
someone other: F.U.N.

F.U.N. by Wangstah November 10, 2008