I can't recall

There are regular nutjobs at my work. They come in every day and be nuts at us. Usually we give them some kind of discount as well. I have no idea why, presumably to encourage them to bring more nutters with them next time? I don't like regulars. They always think everyone can read their mind. They saunter up to the counter and nod at us and that's supposed to be an order? Sometimes they'll introduce themselves but that's even worse because then you are expected to remember not only them but what they eat and drink the next time.