How are you? How is everything in your life? (Said as an informal greeting.) Hey, John, great to see you again! How's tricks?
Inf. a greeting inquiry. Bob: Fred! How's tricks? Fred: How are you doing, Bob? Bob: Doing great! Bill: What's up? How's tricks? Bob: I can't complain. How are things going for you? Bill: Can't complain.
how's tricks?used as a friendly greeting. informal
how’s ˈtricks?(old-fashioned, informal) used as a friendly greeting
Used to make a friendly inquiry about a person or that person's affairs.
See also: trick