Definition from Wiktionary, the free dictionary
- (idiomatic) to interfere with
Don't mess with the controls. I just got everything adjusted correctly.
- (idiomatic) to diss; to put down
Hey! Quit messing with my brother.
- (idiomatic) to joke around with or dupe someone, in either a friendly or unfriendly manner
Don't worry, I'm just messing with you.
to joke with