Total diva

I worked backstage at Fair Saint Louis 2004 (just looked it up). I worked with the catering for the talent because my aunt was in charge of the backstage area. I met all six of the acts that worked backstage. He was a total diva. His trailer was set-up as his per his contract riders. But what we did was apparently all wrong. So he yelled at us through his manager or agent or whomever that was. But he yelled loudly enough that we all heard. It was as passive aggressive as Hermione in [insert any Harry Potter book].