Dumb As A Doornail

What is Dumb As A Doornail?

someone who is just stupid,

and doesn't even know what doornail means anway so isn't really insulted by the term anyway.

"are you saran wrap?"

"who's that?"

"wow your dumb as a doornail"

See stupid, idiotic, moron, slow

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Dumb As A Doornail Edit Meaning