Oh man, that's terrible. :( Yeah, stay out of the food service industry then. I live in the southern part of the US so thankfully, I think I avoid most of the awful customers. Apparently people in northern parts of the country are really rude. People in the south are generally really polite and well-mannered, despite the stereotype about us being that we're all dumb and hateful, haha. But I imagine serving in a place where there isn't common courtesy is pretty bad. I'm kind of dreading my trip to New York in that sense, haha. I say "please" and "thank you" for literally everything and always wish people a nice day. :P