When someone who usually thinks they are better than everybody anyway, completely flies off the handle at the smallest change or problem - usually something minor that most people wouldn't even care about.
"What's going on?"
"Oh the usual Chaditude stuff"
"Shit. What is it this time?"
"Some idiot from the crew came up onstage to get his beer while we were playing, I guess. I didn't see him."
"Yeah, I saw that guy. He's having a total Chaditude about it, isn't he?"
"Totally. Shhhh... listen. You can hear him screaming at somebody... and this is a brick wall!"
"Too bad. I kind of liked this club."
"Yup. Me too."
"Well, maybe it won't get that bad?"