just another way to say "what's going on"
usually used by gang bangers in the hood

a way of asking someone what is going on. usually used when asking what someone is doing that evening.

what's up? what's going on? what's happening?

An all purpose question that was popularized by comedian Jerry Seinfeld. It's used whenever you're confused about a particular subject, especially trends.

"What's the Deal With" Meme.
Originating from a Gizmodo member: LetsTryThisAgain.
Original:
"what's the deal with angry birds anyway? i played it once. then i analyzed the game mechanics, deduced that the rest of the game would be throwing birds at things to knock them over and sat my phone down.

i hear there is something to do with egg bombs in later levels? sounds hilarious and repetitive.

i guess i just don't understand being addicted to a non-sandbox game"

Of course, hilarity ensues...

its a shirt phrase to say

-whats goin on wit u
-how was yo day
-etc.

How you doing?

what your gonna do later on