Top definition
Fo Deff
adverb
Full Meaning: For Deffinetly.
A verbal contract meaning that you must do this action.
Also, less strictly used as to agree with what is being said.
Girl One: "Can You Come Over This Weekend?"

Girl Two: "Fo Deff!"
by Sarah.M.Kennedy January 27, 2009
Get the mug
Get a Fo Deff mug for your cousin Nathalie.