buy a pig in a poke

Fig. to buy something without looking inside first. If you don't get a good look at the engine of a used car before you buy it, you'll wind up buying a pig in a poke. I just took the salesman's word that this camera worked. I guess I bought a pig in a poke.

Common Names:

Name	Pronounced	Usage
Johnathon	JAHN-a-than	English
Kerstin	SHESH-tin (Swedish), KER-stin (German)	Swedish, German
Andromache	ahn-dro-mah-ke (Ancient Greek)	Greek Mythology
Richelle	-	English
Gauthier	-	French
Dervila	-	Irish