Definitions by emry peterson

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 

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