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"Backdoor Shut"
What does "Backdoor Shut" mean?
If you hear a truck driver say "Backdoor Shut" on their CB radio, it's just another way to say "The rear is being watched by police." Also referred to as Backdoor Sealed or Backdoor Covered There are hundreds of other popular CB slang phrases - to learn more, check out the links below or browse the rest of our online CB slang dictionary.

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