1 definition by Dr. Dredel outta l'ville

an abbreviation for first and fifteenth; the days when welfare checks are issued and therefore the days that hustlers and dealers make the most money. Also Lupe Fiasco's record label and catch phrase.
"I told you I would show up screaming out FNF"

-Emporer's Soundtrack
by Dr. Dredel outta l'ville December 15, 2009
Get the fnf mug.