be as deaf as a post(redirected from be as deaf as a doorknob)
be as deaf as a post
To be unable to hear well or at all. I hope grandpa wears his hearing aid to dinner tonight because he's as deaf as a post without it. After years of listening to loud rock music, I'm deaf as a post.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.