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A phrase often used when you've done something wrong or something that can land you in deep trouble.
Example 1-
Billy: Hey, did you tell your mom about sneaking out and banging Jessica last night?

Bob- Nahh. I live by the Don't ask, Don't tell rule!

Example 2-
Guy 1: What's your dad gonna do once he finds out you totally flunked the test?

Guy 2: Don't ask, Don't tell.
by BobsMyMan July 20, 2010
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