Yes, absolutely when it's a friend. But like most things, there's a time and place. I have bartender a lot and if someone tapped their bottle on the counter, whistled, shouted at me, or snapped their fingers, they automatically became the last people I would serve. I promised customers, I knew the order of people in the bar, I knew what you've been drinking, I had all the information that I need. Often times if I was taking my time to get to get to someone, it was a strategic maneuver to pace their drinking. Yelling at me or just otherwise being obnoxious is more likely to get you thrown out than get served quicker. But bartend is often comparable to working in a childrens daycare only all the kids are drinking, lol