- What's coming off?
- What's coming off? & What's going down?Sl. What is happening here?; What is going to happen? (Also a greeting inquiry.) •
Bill: Hey, man! What's coming off ? Tom: Oh, nothing, just takin' it easy.
•Bob: Hey, we just got here! What's going down? Bill: What does it look like? This is a party, dude!
Dictionary of American idioms. 2013.