doorknob

Are these monsters pure animal or can they work a doorknob?

"I turn my hearing aids off, deaf as a doorknob, tune everything out, it's really joyful."

Traces of the chemical weapon were later discovered on the doorknob of Mr Skripal's home, where police believe it had been planted in a "targeted" attack.

It was subsequently discovered that they were suffering from the effects of a chemical which had been left on the doorknob of Mr Skripal's home.

There exists something in medicine called the “doorknob phenomenon.”