(as) dumb as a stump

(as) dumb as a stump

Very unintelligent or foolish. You took apart the entire washing machine just to unblock the pump? I swear, sometimes you can be as dumb as a stump, Larry. I used to think she was dumb as a stump when we were kids, but she grew up to be a particle physicist. Are you dumb as a stump? Why would you touch the alarm when the sign clearly says "DO NOT TOUCH" in bold red letters?

See also: dumb, stump

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