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1.
cfn
Chow for now - CFN
As if you were to say chow to your friend but only for a short amount of time, or just as a casual bye to someone cfn can be used
"Ok so I'll be at yours in 10 minutes!!" - Guy
"Ok, cfn xx!" - Girl

by Jakearuns August 26, 2007
 
2.
CFN
Ciao for now or see you later
at the end of a text or IM

blah x 3
CFN
by qsama January 13, 2009
 
3.
cfn
used on msn, short for confusion
mark: did you ring me?
kate: no?
mark: oh must have been a bit of a cfn
by sazzzzzzzzzzzzzzzzzy May 04, 2008
 
4.
cfn
An abbreviation used in IM conversations; stands for "ciao for niao."
Mary25438: brb

MEyeMakinUHot?: k, cfn
by Reesa December 15, 2006
 
5.
CFN
Certifiably F*ckin' Nuts
Did you see that dude in the restaurant playin' with himself?

-Um...yeah. Can you say 'CFN'?

What the hell did Lindsay Lohan do this time?? Wow...that chick is CFN!!
by FlowerPower71 August 22, 2010