Roots of an Idiom #5

2022年4月25日

Letting the cat out of the bag.

Possible origin being: A "pig in a poke" scam from the 1500's, where a customer buying a suckling pig in a sack would actually be sold a (less valuable) cat, and would not realise the deception until the bag was opened. This is contested but has been mentioned in texts from the period.

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