Top Definition
I fk means I Fucking Know
Person #1- Dude, you need to pay me back
Person #2- I fk
by Barnhart December 10, 2005
1 more definition
4 Words related to I fk
IFK
I Fucking Know.
"Notting Hill is the best movie ever."
"IFK"
by Hugh Grant June 13, 2012

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