Dad Joke

I told my doctor I have a problem with my left ear.

“Are you sure?”
“Yeah,
I'm definite.”

After the third reading, I finally got it!
"I'M DEAF IN IT!" Derr....
I might be suffering from "brain deafness".
My right one is 'Gone'. Deaf as a post with it.
It took me that long as well.After the third reading, I finally got it!
"I'M DEAF IN IT!" Derr....
{I'm} deaf in it = definitehuh,don't get it? please explain