It means that someone said something they shouldn't have said in the first place.
Keep your mouth shut
Be quite and keep that mouth of yours closed!
Be quite and keep that mouth of yours closed!
The cast of Keep Your Mouth Shut - 1944 includes: Lorne Greene as himself
KEEP YOUR MOUTH SHUT
keep your mouth shut
Keep your mouth shut...
litterally "shut your mouth" so basically shut up.
It means to keep your mouth shut and don't say something that might upset someone.
Keep our mouth shut
keep your mouth shut..... :D
It means shut your mouth or shut up or silence.