not know your arse from your elbow Meaning in the Cambridge English Dictionary
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Meaning of “not know your arse from your elbow” in the English Dictionary

"not know your arse from your elbow" in British English

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not know your arse from your elbow

offensive to be ​stupid and ​unable to ​understand very ​simple things
(Definition of not know your arse from your elbow from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)
Translations of “not know your arse from your elbow”
in Chinese (Simplified) 狗屁不懂,愚蠢…
in Chinese (Traditional) 狗屁不懂,愚蠢…
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