One time, my tire kept going flat. I followed my friend J to Discount Tire, just in case I got stranded. He went inside with me. The tire guy started talking to J, even though it was my car, and I was responding to the questions, not J. Eventually I had to step forward and kind of in front J. I saw the tire guy slowly start to realize it was not J's car. Ugh. Obnoxious. He wasn't a jackass, so I let it pass, but it's still frustrating.