"There is a long and fine tradition of KEEPING YOUR TRAP SHUT for US Media and being openly critical to the foreign press."
(Tim Dunlop - April 13th 2003)
Did you know?
trap
Is slang for mouth, there are a few others:
box, fly trap, gob, jaws, kisser, mush
Usage Note:
It's not very nice to say "keep your trap shut" to anyone. If you use this expression, apply it to yourself - "I should have kept my trap shut when the boss asked for my honest opinion about painting in his office."