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1.
abbreviation for "Consider our friendship over"
(Name) cofo!!
by cellie_wellie July 12, 2011
 
2.
Fuck you, four o'clock. The REAL definition is "cousin fucker." It's like mofo but better. And just as good as cafo. Viva la Revolution!
"I hear Meg Malm is a cofo." "Ewww, incest!"
by Meg Malm Is A Cofo January 07, 2005
 
3.
Abbr. for "Come on Four O'Clock". Used by slacking .gov employees while watching the clock.
"It's not even lunch yet?? Cofo!"
by Baylor December 17, 2003
 
4.
cousin fucker
the cofo lost his virginity in his family reunion
by MGpow August 04, 2010