1 definition by Blackice19
Pronounced "fee-fee". A slang term for methamphetamine made popular by the slang master of the Yay Area, E-40.
My partner used to be sharp but now he on fifi. What do fifi mean? Methamphetamine. I can't believe it man. He disappointed me. I'm devastated man, he lost cool points with me.
by Blackice19 April 6, 2012