The service industry is riddled with careless, entitled, and rude customers who think you, as a server, should worship the ground they trample on. At the rate employees come and go in this industry, it's easy to decipher why nobody really likes to work as wait staff. In this case, OP was working at a pizzeria, waiting on an entire floor of tables alone, as there were no other servers on duty that shift. Running to and fro, most of the customers could recognize a damsel in distress when they saw…