When it does not work - it gets destroyed. I had a tantrum and smashed a guitar at club performance once. It was a very important gig for us, and I screwed up. So I threw that thing across the stage and into the amp. The body separated from the neck, but after that I saw nothing. In a blind rage I stompped off the stage, into the parking lot, into my car, laid a black patch a rubber and hightailed it home. The lead singer came over the next day - and I got the lecture of my life.
