Honestly, when somebody who isn&#x27;t a subordinate, friend, or direct charge acts like a jerk, I don&#x27;t think it&#x27;s worth taking this kind of pedagogical role with regard to etiquette (probably not a good idea in the friends case a lot of time as well). If somebody wants to be a jerk, there are enough providers of goods and services that they&#x27;ll find one that responds favorably to that. Not to mention that they&#x27;ll probably rationalize turning them away as the provider being a jerk rather than learning something from it. As DarkTree points out, the provider&#x27;s response to that behavior is more about managing the provider&#x27;s quality of life than about shaping customers for the greater good.