This is what I've been planning (similar to the OP). However, it will require an extended conversation - and my main problem is no-one ever shouts at me
:
Moton: "invective invective"
Me: *hand to ear* "Sorry - I can't hear you"
Moton *louder* "invective invective"
Me: *hand to ear again - shouting* "no, sorry. It's an affliction. I can't hear stupid people."
Moton: *angry* "more invective"
Me: *grinning* "no, it's no good. Try speaking sense. I'll be able to hear you then"
Doubt I'll ever get the right circumstances to make it work though.