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dead as a doorknob

a. (context simile English) entirely, unquestionably or certainly dead.

Usage examples of "dead as a doorknob".

It would have been a pleasant room if it wasn't for the certain knowledge that Uncle Harry or Aunt Minnie or Morty the mailman was naked in another part of the house, dead as a doorknob, getting pumped full of formaldehyde.

I went out with him a couple times, and that thing of his was dead as a doorknob.

He was just lyin dead on the fifth floor, dead as a doorknob, face all contorted like hed seen a ghost.