look up any word, like vai tomar no cu:
 
1.
Female Follower on one's twitter account.
There's lots of hot fefos sending me DMs; gonna try to get 'em to send me pics.
by Nogg October 26, 2012
74 4
 
2.
Faceboook Earthquake Freak Out. when everyone posts about an earthquake when clearly we all felt it.
OMGG EARTHQUAKKEEEEE. IT WAS SOO SCARY. i thought id tell the world about it by F.E.F.O.
by smileyygurll July 07, 2010
1 3
 
3.
An acronym describing finishing a task early and making an exit to pursue more meaningful and satisfying activities. i.e. Finish Early, F**k Off.
(Sam:) Tim, did I see you leaving the office at 3pm?
(Tim:) Yeah, not much going on in the world of light fittings today so I fefo'd that shit, went home and jacked it.

Or

Have you heard about the latest meme on Urban Dictionary? you gotta check out FEFO, it's a thing now, everyone's using it... if you don't you're not cool anymore (assuming you were cool in the first place).
by zoomlion March 12, 2011
12 25
 
4.
a wierd thingy; a mishappening
Hes and fefo person.
by fefo November 22, 2006
7 36