I say thank you all the time at restaurants too. Even when they aren't doing something for me or in front of me. I was out with my friend the other day and they brought him some ranch dressing that he requested. I was the one that said thank you to the waitress. It's a habit I hope I never break honestly. That's funny about the tires. I saw awesome a lot in regular speech and in my posts and my nieces always laugh at me for doing it.