A young brunette went into the doctor's office and told him that her body hurt wherever she touched it.
"Impossible," said the doctor. "Show me."
She took her finger and pushed on her elbow and screamed in agony. She then pushed on her knee and screamed, pushed on her ankle and screamed, and so on. No matter where she touched, her agony was apparent.
After some thought, the doctor said "You're not really a brunette, are you? You're really a blonde".
She sheepishly admitted that indeed, she was a blonde.
"I thought so," said the doctor. "Your finger is broken."