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English definition of “be off your head”

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be off your head

mainly UK informal
to be crazy: You must be off your head going out in this weather! UK to not be in control of your behaviour because you have drunk too much alcohol or taken drugs: Hannah was off her head as usual.
Translations of “be off your head”
in Chinese (Traditional) 發瘋,精神錯亂, 喝醉了, 毒癮發作…
in Chinese (Simplified) 发疯,精神错乱, 喝醉了, 毒瘾发作…
(Definition of be off your head from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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