What’s happening?

What's happening?

What's going on? How are you doing? What's new with you? "Happening" is often colloquially shortened to "happenin'" or "happ'nin'." A: "Hey, Jake, what's happ'nin'?" B: "Not much, Mike. How you been?" What's happening, everyone? You all have a good weekend?
Farlex Dictionary of Idioms.

What’s happ(ening)?

interrog. Hello, what’s new? Hey, dude! What’s happening?
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions
See also:
  • happ
  • What’s happ?
  • What's happening?
  • What’s coming off?
  • What's coming off?
  • What's poppin'?
  • What's popping?
  • What’s poppin’
  • poppin
  • What’s really good witcha?