Shut your north and south while you are eating.
north and South
idiom Slang
Cockney rhyming slang · East London
mouth
He kept his north and south shut because he did not want to say anything wrong.
The man opened his north and south to deliver a long speech that eventually silenced the entire room.
- 01
all mouth and no trousers
Alternative form of all mouth and trousers.
- 02
all mouth and trousers
Superficial, engaging in empty, boastful talk, but not of real substance.
- 03
all one's taste is in one's mouth
One lacks good taste in aesthetic or cultural matters.
- 04
bad taste in one's mouth
A feeling that something is morally despicable as to cause nausea.
- 05
big mouth
The mouth of someone who talks too much, especially by making exaggerated claims or by inappropriately revealing information.
- 06
born with a silver spoon in one's mouth
Born rich, or into a wealthy family.
- 07
butter wouldn't melt in someone's mouth
The identified person appears to be benign, mild-mannered, or calm (but with an integral suggestion that, to the contrary, they really are untrustworthy, disagreeable, or mean-spirited).
- 08
down in the mouth
Sad or discouraged, especially as indicated by one's facial appearance.
Last updated June 7, 2026