bird brain
Scatter-minded simpleton
A bird brain is a stupid person, someone whose small brain supposedly limits their thinking capacity.
The insult draws on the idea that birds have tiny brains relative to mammals.
As an adjective, usually hyphenated: a bird-brained scheme.
The term is mild and often playful rather than genuinely harsh.
dimwit
Foolish, slow person
bonehead · dolt · dope · dullard · fool · idiot · ignoramus · imbecile · knucklehead · moron
- Animal Idiomsblind as a bat, brave as a lion, busy bee, copycat, dark horse
- bird expressionsearly bird, lovebirds, jailbird, night owl, wise owl
- Mind Idiomssharp mind, open mind, quick wit, pea brain, big brain
intelligence
bird braingenius
Person of rare brilliance
Einstein · brainiac · mastermind · intellectual · rocket scientist