What's happenin', what's up
Got da perc' fired up
What's happenin', what's up
Got Patron in my cup

from Lil Jon (Ft. E-40 & Sean Paul) – Snap Ya Fingers Lyrics on Rap Genius

Meaning

Lil' Jon is askin' “what’s happenin'” (which is gonna replace the now archaic “what’s up” as a greeting)
He’s admitting to being high on purk (Percocet) and Patron (a brand of tequila)

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