Definition from Wiktionary, the free dictionary
See also: shit for brains
- (pejorative, vulgar slang) Extremely stupid.
- That shit-for-brains assistant of mine lost my files again.
- (pejorative, vulgar slang) An extremely stupid person.
- That new assistant of yours is a real shit-for-brains.
- He's another one of those shit-for-brains.
- Partridge, Dictionary of slang