CF 

CF stands for Cystic Fibrosis.

Me and my other CF friends are going to transfer to a new CF clinic next year!

CF by Paninaro November 22, 2017

CF 

cousin fucker, some one who fucks there cousin
no joke this person in the example fucks his first cousin

DARREN ORAM
that kid is a cf, wat a faggot

CF by emry peterson January 16, 2008

cf 

cousin fucker

some person who rails there cousin

darren is a CF

see that kid hes a cf

cf by emry peterson January 16, 2008

cf 

an abbriviation for CUM FIESTA a popular porn site

Matt jacked off to some CF for like 10 hours, sith moka at his side.

cf by Mokazors January 6, 2005

cf 

when failed to write xD or just pressed a key one steep to he right of the place u get cF

angry friki: u sux
loling friki: xD
angry friki: srsly, u sux
loling friki: cF
angry friki: u just got OWNED!

cf by alefaso May 26, 2009

CF 

Crowd finger or crowd fuck.

Fingering a chick in a public venue.
Usually done at a party or anywhere with a large amount of spectators.

Man did u see that guy CF that bitch at the rave, that was seedy as fuck!

CF by Nick Petrou January 22, 2009

CF 

Common Folk

Example #1 Billy "Did you see that rich girl"
James yeah we won't ever get her number we are a CF.
Billy "Whats CF"
James "A common folk"

CF by DaltonBen1488 September 22, 2009