Related Clues:

• Be quiet and put on the car safety device
• By ine-fifty in the morning I may be out of bed, but I won't give you any information
• Fall silent and refuse to talk
• "Put a lid on it!"
• Sensible car drivers do keep quiet
• Fasten safety catch, shut it!
• Evidence of traffic wardens outside university makes one stop talking
• Keep quiet aboard ship
• Don't talk of university when restricted by immobiliser
• Be quiet!
• Be quiet - as motorists should do
• Fasten oneself in to a car seat - keep quiet!
• Strap yourself in - keep quiet!
• Sh!
• Holmes mouthpiece getting blue leading to gag order