FoF 

Full of Fail.
A way to describe something that is so Epic fail.

Amo - Lawl Zath check out my new spec it is the win roflmao!!1!11one!!11!
Zath - no it's not it's FoF

-------
Specialized - SAVE BRITNEY!
Kirel- Britney Spears is so FoF.

FoF by Zathy January 11, 2008

FOF 

Prounounced abbreviation for:
Fuck Off, Fucker
Definition: Dismissive statement.

"Hey, can I borrow $5?"
"FOF"
----
"Actually, you didn't say that. You said this..."
"FOF"
----
"Look you bleepitybleep yadda yadda"
"FOF"

FOF by DaRana May 31, 2003

fof 

F.O.F. stands for flock of flies
it is a nickname given to the most smelly of the smelly, most likly someone fat with a fuda / fupa

there was a flock of flies following nate around at practice so everyone calls him fof.

fof by thebigmansgoingdown October 29, 2006

FOF 

Friend of a friend
Or a friends friends friend, etc.

She’s a fof
Everyone in the world is a fof

FOF by Keira13 March 2, 2019

FOF 

Facts On File.

Beez: Yo bruh that shit is whack af.

Wem: FOF

FOF by LiMiTs May 1, 2019

FoF 

short for Fuck off, Fucker. Able to be used in mixed company and usually said with a smile.

He got all up in my face.. so I told him to FoF!

FoF by Snuhfulupagus May 30, 2003

fof 

fof is a nickname; it stands for "flock of flies"
if you have any stinky friends that you see flies follow them then their nickname is fof

when eric and westin saw a flock of flies following nate they called him fof

fof by thebigmansgoingdown October 29, 2006