‘dinosaur juice’: meaning and origin

USA, 1977—petroleum, and any liquid derived from petroleum used in a vehicle powered by an internal-combustion engine—perhaps from popular association of ‘dinosaur’ with ‘fossil fuel’

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‘penny-a-liar’: meaning and origin

UK, 1839—jocular variant of ‘penny-a-liner’ (i.e., a journalist who was paid at the rate of a penny a line, a person who produced mediocre journalistic work) with the implication that such journalists fabricated falsehoods

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‘cackle-cutting’: meaning and origin

UK, 1904—refers to the action of making someone stop chattering—from the colloquial imperative phrase ‘cut the cackle (and come to the horses)’, meaning: stop talking (and get to the heart of the matter)

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‘perp walk’: meaning and origin

U.S. slang, 1986—a march into or out of a police car, courthouse, etc., that a person in police custody is made to perform for the benefit of the news media—‘perp’: shortening of ‘perpetrator’

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