get one's ass in gear
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get one's ass in gear (third-person singular simple present gets one's ass in gear, present participle getting one's ass in gear, simple past got one's ass in gear, past participle gotten one's ass in gear)
- (US, idiomatic) To exert effective effort; to get going; to get moving; to start producing.
- He had been sitting there for two hours until the boss showed up and told him to get his ass in gear.
- "Ass" is sometimes used to denote self in idioms and expressions, as in "get your ass up", "get your ass out of here."
to exert effective effort