Keep your mouth shut and people will think you stupid;

Related:

• Keep your mouth shut and people will think you stupid;
  Open it and you remove all doubt...
• Marge: Oh Maggie, when are you going to talk? Lisa:
  Well, don't push her. Remember, it is better to remain...
• Keep your chin up,
  it helps you keep your mouth shut...
• When you are in it up to your ears,
  keep your mouth shut...
• When you are in it up to your ears,
  keep your mouth shut...
• If you keep your mouth shut you'll never put your foot
  in it...
• When you are in it up to your ears,
  keep your mouth shut...
• When you are in it up to your ears,
  keep your mouth shut...
• When you are in it up to your ears,
  keep your mouth shut...