Definitions by <name>insert<name/>

Not the brightest shelf on the knife 

One who is not the prime example of human intelligence; idiot

Bob: Did you see Lisa fall down those stairs?
Dan: Yeah, she totally tied her shoes together!
Bob: Wow, She's not the brightest shelf on the knife.

Not the brightest shelf on the knife by <name>insert<name/> September 1, 2007