button it!

button it

slang To stop talking. Often used as an imperative. Button it, sis—I don't need to hear your opinion on everything I do! Mr. Riley, if you don't button it, I'm going to send you to the principal.
See also: button
Farlex Dictionary of Idioms.

ˈbutton it!

(British English, spoken) used to tell somebody rudely to be quiet
See also: button
Farlex Partner Idioms Dictionary
See also:
  • button it
  • button lip
  • button your lip
  • Button your lip!
  • button (one's) lip
  • a sob story
  • right on the button
  • all in (one's) head
  • a thing you don't want is dear at any price