Loose Lips sink ships
Loose Lips sink ships : Phrases
You must keep this secret or there will be a price paid.
Do not discuss any of our plans outside this boardroom, remember loose lips sink ships.
Popularized by U.S. military propaganda during World War II. The phrase was meant as a reminder that classified information was never to be discussed with anyone without proper clearance and a need to know.
Specifically the phrase means that disclosing a military secret to the enemy could result in large loses, such as the sinking of an entire ship.
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