Pig in a poke
Pig in a poke : Phrases
An offering that is foolishly accepted without being looked at first.
I bought a used pickup truck, but it turned out to be a pig in poke because it burned oil.
A poke is defined as a bag or a pouch and is the origin of the word pocket - a small pouch.
At medieval markets, unscrupulous traders would display a pig for sale. However, the pig was always given to the customer in a bag, with strict instructions not to open the bag until they were some way away. The trader would hand the customer a bag containing something that wriggled, and it was only later that the buyer would find he'd been conned when he opened the bag to reveal that it contained a cat, not a pig.
The phrase refers to the failure to look inside the bag or poke.
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