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English definition of “off your trolley”

off your trolley

UK informal
behaving in an extremely unusual way or doing something very silly: Anyone who saw us doing this would think we were off our trolleys. Have you gone completely off your trolley? You'll never get away with it!Of unsound mindStupid and silly
(Definition of off your trolley from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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