Meaning of “be curtains for sb” in the English Dictionary

british dictionary

"be curtains for sb" in British English

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be curtains for sb

informal

used to say someone will die or have to stop doing something:

It'll be curtains for him if he doesn't do what I tell him!

(Definition of “be curtains for sb” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)