1. pig in a poke - Noun
2. pig in a poke - Phrase
pig in a poke (plural pigs in a poke or pigs in pokes)
(idiomatic) Something whose true value is concealed or unknown and may be lower than expected by the buyer or claimed by the seller, especially something offered for sale.
Kids are playing there and it is a quintessential pig in a poke. Source: Internet
"Using a southern expression, DUMAC is not in the business of 'buying a pig in a poke,'" Cox wrote. Source: Internet