Comes from the word decent. Usually
ambiguous as to what the correct context is, seemingly anything can be
deece.
Deece is a
fringe word, only used and understood by a few people and to everyone else its a source of cunfusion.
Guy 1: Have you heard my new dance mix? I think its pretty
deece!
Guy 2:
Dude stop saying that! I don't know what it means and it'll never
catch on!
Guy 1: That is soooooo not deece