Top Definition
FOF: Frown On Face
The opposite of LOL
-created on the Engadget Popdcast 23/01/11
I'm sad FOF :(
by amadeusz55 January 23, 2011
Text language for fuck off forever
Girl 1: John won't stop texting me! It's like harassment!

Girl 2: If he's being a creeper, just tell him to FOF!
by happyredhat March 15, 2010
An acronym used on Facebook after you delete an inappropriate comment due to your "Family on Facebook".
John Smith is in a relationship.
Bill: (Deleted comment) GET SOME!!!
John: fof.
by TyWP1115 November 03, 2010
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.
by Zathy December 31, 2007
The last bit of soda that is impossible to get out of the can and into your mouth.
Anneke: Hey, can I have a sip of your soda?

Tony: You can try, but all that's left is the fof.
by Toninator May 21, 2009
A pronounced acronym, a derogotory term for illigal immigrent to the US from mexico. Litteraly, it means "fresh over fence"
Dude that FOF thats mowing your lawn was staring at my girlfriend.
by Eeean April 03, 2007
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