A closed mouth gathers no feet proverb
If you don't say anything at all, you can't say anything that is improper or makes you feel shy, uncomfortable, or ashamed.
John remained silent during the meeting as he knew that a closed mouth gathers no feet.
Afraid of saying something foolish, I stayed quiet during the meeting. A closed mouth gathers no feet, you know.
This proverb is a play on the idiom "put (one's) foot in (one's) mouth" (to say something stupid).
People are always inclined to flatter or please a rich man by laughing at his joke which may not be a very good one.
Everyone at the table always flatter the boss by praising his humor. A rich man's jokes are always funny.