Quote from Tech Analysis:
Today's groaner:
A man rushed into a busy doctor's office and shouted "Doctor! I think I'm
shrinking!!"
The doctor calmly responded, "Now, settle down. You'll just have to be a
little patient."
A man rushed into a busy doctor's office and shouted "I need to see the Doctor I think I'm invisible".
The nurse walks back and tells the Doctor "There's a man at the front desk who claims that he is invisible.!" The Doctor replied. "Tell him I can't see him right now."