A post in this thread reminded me of a thread I was wnting to start. I need some new “dumb as a” expressions. The classics are of course “dumb as a bag of hammers” and “dumb as a box of rocks” (or “box of hair” as an alternate). But I need some new ones.
So far the best among several lame attempts is “dumb as a suitcase full of hats.” I know y’all can do better than that. Little help?