David Yow of The Jesus Lizard took a bottle to the side of the head, said “Nice shot dick”, waited for them to clean the glass off the stage, then asked the crowd if “they could get some kind of symmetry going, and get this side too” before playing out the rest of the show.

http://www.youtube.com/watch?v=Uu9lUbf5GQ0

These kids are blowing up big, and need to learn some professionalism.