Public displays of random, seemingly unprovoked outbursts or actions involving exaggerated emotion such as anger, rambling at a microphone, goofy public political discourse, or other attention-getting kooky behavior.

Guy: Did you hear Dave at the Board meeting?
Female Co-worker: Yeah, I hope he has his resume' updated, 'cuz the COO had that next-stop-crazytown look on his face when Dave started screaming at him about his plan for next year's projects. In this economy, that's just nutty.
Guy: That's what I was thinkin'.