galang
A Jamaican or Rasta way of telling someone to shut up and stop acting like a fool. M. I. A. made it famous, but it’s basically telling you to act your age.
Yo, galang! I ain't even mad at you, I'm just tired of your nonsense.
My mom said 'galang' to me when I failed math again.
He said 'galang' to the kid who kept stealing his snacks.