Converted into coke (a solid fuel made from coal), or slang for being under the influence of cocaine.
From 'coke' (coal heated without air to remove impurities), a word of uncertain origin possibly from dialect 'coak.' The slang sense emerged in 20th-century drug culture.
One word with two completely different meanings tells two stories: the Industrial Revolution needed coked coal to smelt iron and steel, while the cocaine sense emerged exactly when that same industrial revolution peaked in cities. Same word, opposite historical moments.
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