This little old lady came into the store the other day, and we had a five - ten minute conversation about her grandkids, and what she wanted to buy for them, found her the right toy, took it to the till and as I was putting it through I asked her something else and she didn't reply, so I looked up and probably looked a bit confused because she said "sorry, did you just say something? I'm deaf, and I've been lip-reading up to now." I was like wow, I hadn't even realised because she didn't pause before replying, or get anything wrong and I totally hadn't realised she was reading my lips!