look up any word, like wcw:
 
1.
IFI
Incorrect Factual Information
That bird is hot!

IFI man. Sort yourself out, you Mug.
by Tommytux December 14, 2006
 
2.
Ifi
That crazy-ass ghetto lesbian bitch in your neighborhood that breeds smelly ferrets and black cats for a living.
Maaaan, Ifi's house smells like ferrets from all the way across the street!
by Empty7685 December 29, 2011
 
3.
mobile phone speaker capability - resulting in very low fidelity music. Usually played by young teens in groups of 5 or more in public places such as the train, bus, parks, etc.
sorry, i can't hear you, some kids nearby are blasting music from their i-fi.
by SKDu69 December 23, 2010