Shut your trap!

Related to Shut your trap!: Shut Your Mouth, Shut Your Pie Hole

shut your trap

An imperative to be quiet or cease talking immediately. Can be rude, aggressive, or jocular depending on the context. Shut your trap, Bobby—no one asked for the opinion of a dork like you! A: "So, where do you think we can sell these stolen goods?" B: "Shut your trap! Don't you have enough sense not to talk about that in public?" A: "Wow, that Cadillac has seen better days. How much did you pay for that little gem?" B: "Ah, shut your trap, Dave. I think it looks just fine."
See also: shut, trap
Farlex Dictionary of Idioms.

shut your ˈmouth/ˈtrap/ˈface/ˈgob!

(also keep your ˈmouth/ˈtrap shut) (slang) a rude way of telling somebody to be quiet or stop talking: ‘Shut your face’, Roger said, ‘or I’ll kick you out.’ Why can’t you learn to keep your big mouth shut?
Trap and gob are slang words for ‘mouth’.
See also: face, mouth, shut, trap
Farlex Partner Idioms Dictionary

Shut your trap!

verb
See Shut your face!
See also: shut
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions
See also:
  • shut your trap
  • shut your yap
  • yap
  • shut your pie hole
  • gob
  • shut your gob
  • Shut your face!
  • shut your mouth/trap/face/gob!
  • shut your mouth
  • Shut your cake hole!