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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. © 2015 Farlex, Inc, all rights reserved.

What's happening?

 and What's happ?
Sl. Hello, what's new? Hey, dude! What's happening? What's happ? How's it goin'?
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.

What’s happ(ening)?

interrog. Hello, what’s new? Hey, dude! What’s happening?

What’s happ?

McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.
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References in periodicals archive ?
"Either Happ's at-bat or having to hit Kyle Ryan, draws the walk, and then all of a sudden he attempts to go to third base, that was another big play," Maddon said.
MPP and HAPP help an operator's budget by offering a solution that reduces unplanned maintenance costs, downtime and unnecessary stresses," said Stephen Alcock, senior director, Aftermarket -- Europe, Middle East, Africa and India, Honeywell Aerospace.
"I feel like my at-bats are getting better," Happ said.
''We were expecting Happ to give us a shot and he did a great job.''
In a statement expressing his last words as he lay on the table where he was ultimately executed, Happ confessed.
Happ added, "When I went to school in Omaha, I really embraced urban living.
"We have staff talking to and trying to engage the two in interacting, and we hope that they might find their harmony again," Happ said.
"We get the feeling they can't stand the sight of each other anymore," the Daily Mail quoted Zoo boss Helga Happ as telling The Austrian Times.
In an interview, Scott Happ, Mortgagebot founder, president and chief executive officer, called the transaction "just a dream deal." Happ said his company wasn't really in the market looking to be acquired at the time.
director Robert Happ that a repayment agreement should be invalidated because he signed it under duress.
rex, says Happ. All of the wounds show signs of infection and healing, an indication that the Triceratops lived for several years after the attack.
"It's tough when you do your job, come off the bench there, have a great at-bat," Happ said.
Happ, the Yankees (https://www.ibtimes.com/yankees-rumors-signing-ja-happ-could-mean-trade-syndergaard-kluber-wont-happen-2741707) aren't likely to trade for another big-time starter.
Honeywell (NYSE: HON) has signed a five-year contract with Bristow Helicopters for its Honeywell Avionics Protection Plan (HAPP), the company said.