Dutch
Various countries
* to buy a cat in a bag
Buying somehing that ends up being very disappointing
"Test eerst even de auto voordat je hem koopt, je wil geen kat in een zak kopen!"
Try out the car before you buy him, you don't want to buy a cat in a bag!
Added August 2020 by paulinemeganck
4 out of 6 Dutch speakers have heard this