Employee: "Hi, Welcome to Moonbucks, what can I get for you today?"
Me: "Um. Yes. Um. Hi. Um. Do you have coffee? I would like a large, coffee, just coffee, you know regular stuff that you drink and usually it's hot with some milk or something and it doesn't really taste good but. Um. You know what? I think I left my wallet in my car. Um. Yeah, I'll be back in a second."
They know I'm not coming back.