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What does "Seventy-thirds" mean?
If you hear a truck driver say "Seventy-thirds" on their CB radio, it's just another way to say "Best wishes." You might also hear "Seventy-thirds On You" or "Seventy-threes." 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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