"Billy's been known to do that whenever someone asks him a ridiculously stupid question.. I've even heard a story from Placebo about it - one of them was chatting with him, getting along really well and then out of nowhere he asked Billy "So did you notice any difference in your songwriting when you shaved your head?". Apparently he just looked at this guy like he wasn't sure whether he was taking the piss or not(making fun of him.. sorry! australian slang), and then when he realised that the guy wasn't and that he was actually just asking a really retarded question, he just got up and walked away."

Psychological studies show the relation between a physical changing, for exemple hairstyle, on the psychology of someone and the expression of a changing in one's life. The question wasn't so retarded, it seems to me. Maybe, it was the way it was asked? Was it a long time ago?