dumber than a doornail
dumber than a doornail
Very stupid. You took apart the entire washing machine just to unblock the pump? I swear, sometimes you can be dumber than a doornail, Larry. I used to think that kid was dumber than a doornail, but he turned out to be a physicist.
See also: doornail, dumber
Farlex Dictionary of Idioms.
- (as) dumb as a post
- dumb as a post
- (as) dumb as a fencepost
- dumber
- dumber than a bag of hammers
- deader
- deader than a doornail
- swear down
- swear
- be (as) dead as a doornail