A greeting, synonymous with greetings such as "What's going on?"
What's going on?
Fat bitch: What's crackin'?
Me, nice guy: The floor fat bitch.
1. What up? Gang associations. Crip variant. What's poppin is the Blood counterpart.
Losing gang associations, appropriated into standard vocab from media exposure.
2. sarcastic way to say what up to a crackhead or other drug addict
1.a Big Homey: What's crackin, Cuz?
.b white kid: (seeing partner) Yo, what's crackin?
2. "Hey Tyone, whats crackin? It's still 187 on a MF Rock.
Yo dawg whats crackin? Did u pop a cap in that blood's ass the other day?
Means : 'What's doing'?
'What's going on'?
'What's up'?
"Yo brother, what's crackin'?"