die Katze im Sack kaufen

to buy a pig in a poke; to buy something sight unseen

Origin

Probably from medieval market trade: swindlers would palm off a worthless cat in a closed sack on unwary buyers instead of a valuable piglet.

Source

Building blocks

Words in this expression

Grammar that uses this word

Examples

  • Ohne Probefahrt kaufe ich kein ich will nicht die im .

    I won't buy a car without a test drive — I don't want to buy a pig in a poke.