(as) thick as a brick
(as) thick as a brick
Remarkably stupid, dimwitted, or obtuse. I smoked a lot of marijuana when I was in high school, so I turned out thick as a brick by the time I finally graduated. Jen's new girlfriend is very nice, but she's as thick as a brick.
See also: brick, thick
Farlex Dictionary of Idioms.
- be (as) thick as a brick
- (as) thick as two planks
- thick as two planks
- thick as two short planks
- (as) thick as two short planks
- be (as) thick as a short plank