Not Fucking Invited or No Fucking Invite (crikey, how long does a definition have to be to get in here?)
Q "Are you going to Jane's party on Saturday?"
A "No, I'm NFI'd"
Not Fucking Invited. Commonly used when refering to sluts, whores, and dumb bitches who show up to parties where they are unwanted.
"God, that slut Katrina Samson is so NFI."
Not Fucking Interested
Q "Do you want to help me do the house work?"
A "I'm NFI on house work bitch!"
No Fucking Interest. When someone tells you a spot of information and you really couldnt give a crap.
Guy1: Holy shit man i just saw your ex with some douche in a bar!
Guy2: NFI dude, NFI.
Although there are already meanings for the acronym, perhaps a more feasible definition: (Not Fixing It)
Used by those who know that texts aren't a fucking college application essay so it should not be taken as such with silly grammar errors.
Cara: are you ducking kidding me
Cim: wut
Cara: nfi
an acronym of "not flipping invited"
im having a party in there wanna come?
maybe
well you cant
why not?
you're NFI
nfi?
not flipping invited!