This isn't quite what you're looking for, but...
In L.A., I was pulled over for (allegedly!) starting my turn after the light had turned yellow. I had no idea I had done anything wrong, and was gobsmacked to be pulled over. The gobsmacked-ness (why on EARTH am I being pulled over..?? is my tail light out? what?) meant I wasn't lipreading well, and the cop had sunglasses and a mustache, and I just wasn't catching him. I said I was deaf, could he write or something?
He didn't believe me.
There was a bit of back and forth as I tried to convince him that I was, in fact, deaf. He became less and less amused. I don't know if I would have gotten a ticket no matter what, but the back and forth certainly didn't help.
He clearly thought I was trying to put something over on him. But I wasn't!!!
General moral -- cops HATE it when they think someone is using an excuse.