To get some sleep or take a nap. A casual, informal way of saying you're going to sleep.
This American slang emerged in the 1960s, derived from the cartoon convention of showing sleeping characters with 'Z' letters floating above their heads to represent snoring sounds. The letter 'Z' phonetically resembles the buzzing or snoring sounds people make while sleeping.
This phrase is delightfully modern, born from visual media rather than ancient wisdom or agricultural metaphors like most sleep expressions. It shows how comic strips and cartoons have actually influenced our language, turning a simple visual symbol into a widely understood verbal expression for sleep.
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