The best way I can say it is in someone else's words:
"Cause the one thing that you always ask is the one I don't understand: why. I've no idea why. I see a guy walking down the street with a stupid look on his face and I want to bash him over the head with a bottle. To me that's normal. It's weird to me that no one else feels that way. It's all I think about. I can't stop.""
