1. A warcry against ones' enemies decrying stagnation, conformity, and inferiority; Essentially, "Death to your worries, enemies, and general lameness"
2. A call-and-response used as a greeting, toast, or affirmation
From Curtis Meyer's poem "Spell of The Universe (Hip-Hop in Circles Comes)":
When you've been in the bush for so long, that when you get back to the 'city' or anywhere that has more than 25 people you sketch like a junkie that smoked one too many rocks