A competetive encounter between two (usually young) males of Italian/Hispanic heritage.
Derived from the term "dance-off" and the common perception that such ethnicities are "greasy".
Can involve posturing, dancing or weaponry depending upon the wishes of the participants.
Often conducted for the benefit of a female onlooker.
Wow look how Jose uses his blade! He will cut off Xavier's dick if this grease off gets any more intense.