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Phrase Meanings » bug out
What does "bug out" mean?
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Bulge, as in The news will make her eyes bug out with astonishment. This expression was originally used literally for bulging eyes and later used more loosely as a sign of astonishment. [Colloquial; mid-1800s]
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Leave, run out, as in This conference is a bore; I think I'll bug out. This usage originated as military slang for deserting and today is used more loosely. [Slang; c. 1950]