(as) deaf as a post
US /əz dɛf əz ə poʊst/
UK /əz dɛf əz ə poʊst/

1.
sordo como una tapia, completamente sordo
completely deaf or unable to hear well
:
•
My grandmother is as deaf as a post, so you'll have to shout.
Mi abuela está sorda como una tapia, así que tendrás que gritar.
•
I tried to tell him, but he's as deaf as a post.
Intenté decírselo, pero está sordo como una tapia.