Adrian

You were a singer and performed at concerts, restaurants, clubs and many other places. You were paid good money because you were quite a popular singer.
You were invited to perform at a popular restaurant. There was a waiter there, and to put it mildly, he was rather unfriendly. More accurately, he hated his job and took it out on the customers. His name was Adrian, and he could easily yell at a customer, slam the table, or break a mug, but he wasn't fired. After all, his father owned the restaurant.
So you walked into this restaurant and started setting up the microphone and sound. Your mouth was dry and you decided to order wine.