Waazzaa is the slang for what is up.
It started like this: What is up? > What's up? > Wassup? > Waazzaa > sup
(also the nickname of a famous dotaplayer)
One man to the other:
- Yo, Waazzaa?
+ Yo, dawg nothing, ya cool ?
- oh, yeah.
+ Have you heard about that new guy Waazzaa?
- Sure i have, i've heard he's real good.
+ he sure is.