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What's happening?

 and What's happ?
Sl. Hello, what's new? Hey, dude! What's happening? What's happ? How's it goin'?

What’s happ(ening)?

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

What’s happ?

References in periodicals archive ?
Tender notice number : HAPP CAP TE 152610 EO 2015 16 Dt 08 10 2015
He has his own studio, Happs Pottery, in Dunsborough featuring his works as well as works by other guest potters.
Ian Happs and son Jonathan who are cycling from John O' Groats to Land's End