something you say in parting, a farewell, means "good luck" or "best of luck", "hope things go well"
originates in the graffiti subculture. refers to the hope that one's tag
, throw up
, or burner
will "stay up" and not be buffed
friend # 1: "Great to see you my brotha, i c u lata. peace"
friend # 2: "aight. stay up!"