The hairdresser, slightly puzzled, starts cutting the blonde's hair anyway. After a few minutes, he notices that the blonde hasn't moved at all. Curious, he asks again, "Ma'am, would you please take off your headphones? It will be easier for me to cut your hair."
The blonde replies, "I'm sorry, I can't do that. If I take them off, I'll die!"
Perplexed, the hairdresser asks, "Why on earth would you die if you take off your headphones?"
The blonde responds, "Because without them, I won't know which side is my good ear!"