I'm guessing all or most of us are somewhat hard of hearing, do yourself and the rest of us all a favor and if someone says anything like selective hearing or what ever read them the riot act, long and loud, tell them they mumble, have selective speaking and shit like that. Ask them why it's ok for them to make fun of your handicap but you are not allowed to make fun of them for being stupid, fat or what any other defect they have.
It's time for us to stand up and not have to deal with that crap.
Why is it , when you say HUH !....they repeat it in ever hush tones

and then get annoyed
If I had heard or completely understood, I would not have said HUH !
My Granddad , used to say ..." Shot who, in the crack of the fence ? "
I've used it and used to crack people up !
Of Course, any more the anti's will get all butt hurt ...so I use excuse me ? or what ?