you must be joking Meaning in the Cambridge English Dictionary
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Meaning of “you must be joking” in the English Dictionary

"you must be joking" in British English

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you must be joking

(also you've got to be joking)B1 said in ​answer to something that someone has said, ​meaning that you do not ​believe they need said it ​seriously, or you ​think it is a ​stupid thing to say: You've got to be ​joking if you ​think I'm going to ​stand in the ​rainwatching you ​playtennis!
(Definition of you must be joking from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)
Translations of “you must be joking”
in Chinese (Simplified) (表示不相信或觉得荒谬)你一定是在开玩笑吧…
in Chinese (Traditional) (表示不相信或覺得荒謬)你一定是在開玩笑吧…
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