As someone who used to bartend, it’s important to understand that in most bars, the «customer is always right» rule does not apply. In a bar, anyone can get thrown out for any reason. So don’t be an a-hole. When an obnoxious customer kept harassing doorman u/NotOutrageous over a $2 cover, OP never lost his cool. Instead, he took the opportunity to administer a bit of malicious compliance to teach the rude customer a lesson.