gob

shut your gob

An imperative to be quiet or cease talking immediately. Can be rude, aggressive, or jocular depending on the context. Shut your gob, 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 gob! 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 gob, Dave. I think it looks just fine."
See also: gob, shut
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

gob

(gɑb)
1. n. a blob or mass of something. Take that horrid gob of gum out of your mouth!
2. n. a large amount of something. (Often in the plural.) I need gobs of money to get through school.
3. n. the mouth. (Chiefly British.) Pop that in your gob and see if you like it!
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions
See also:
  • shut your gob
  • shut your trap
  • Shut your trap!
  • shut your yap
  • yap
  • shut your pie hole
  • shut your mouth/trap/face/gob!
  • Shut your face!
  • shut your mouth
  • Shut your cake hole!
References in periodicals archive
Numerical analysis on the influence of gas extraction on air leakage in the gob, Journal of Natural Gas Science and Engineering 33: 278-286.
ANALYSIS OF INFLUENCE OF TYPES OF ROCKS FORMING THE GOAF WITH CAVING ON THE PHYSICAL PARAMETERS OF AIR STREAM FLOWING THROUGH THESE GOB AND ADJACENT HEADINGS
Third (Stage III), as the working faces advance, every time the block reached the rear of the working face, a single hydraulic prop and an I-steel were used to increase the support the entry roof, and then the block was pushed into the gob side of the entry by a single long hydraulic prop (Figure 15(c)).
During methane drainage, the methane pressure in an abandoned gob becomes relatively low, at which point the gob has a low free methane volume, as indicated by (2).
Secondly, the GoB is still not prepared to react in time: Operation Thunderbolt, which led finally to an end of the carnage, was initiated 10 hours after the beginning of the attack.
Take the production of the coal mines in Tongxin coal mine as an example, for Working Face 8104 to 8107 of carbonic coal strata which are currently excavated, gobs of the two Jurassic close distance coal strata and sectional coal pillars reserved in the adjacent working faces were distributed on the upper part.
Gob's magic trick goes wrong when he the secret compartment that holds the handcuff key gets jammed.
The GOB maintains that there are only about 65,000 registered addicts in Burma.
"It will grieve with mechanical efficiency and mechanical strength," Gob later intones.
The return for GoB after investing $ 600 million in the joint venture is so paltry that it is barely comparable with the interest on a $ 600 million fixed deposit.
The National Drug Control Council (CONALTID) is the GOB's central CN policymaking body.
In 2009, the GOB reported eradication of over 6,341 hectares of coca nationwide, 84 percent of which took place in the Cochabamba tropics (Chapare).
In fact, large gobs of taxpayers' precious earnings will continue to be squandered, if not on obsolete military bases, then on warmed-over schemes for "defense conversion," "worker retraining," "high-technology infrastructure investment," and other plots of Clintonites and old-fashioned Capitol Hill politicians.