The act of greeting another person, basically saying hello in a more ghetto fabulous way. A deuce is chucked when you hold your middle and index fingers like a peace sign, sideways with knuckles showing to whomever you are greeting.
Great way to show respect, say hello, greet anothe from a distance.
The act of leaving and saying goodbye to everyonein the room at once by throwing two peace signs up. The act of chucking them depends on the chucker; some throw it to the side, some do the Richard Nixon and some just say "deuces".