be (as) thick as two short planks
be (as) thick as two short planks
To be remarkably stupid, dimwitted, or obtuse. I was as thick as two short planks back in high school. Good thing I straightened out in college. Jen's new girlfriend is very nice, but she's thick as two short planks.
See also: plank, short, thick, two
Farlex Dictionary of Idioms.
- (as) thick as two short planks
- thick as two short planks
- thick as two planks
- (as) thick as two planks
- be (as) thick as a short plank
- be (as) thick as a brick