Repeat

A woman wasn't feeling well, so she asked a co-worker if she could recommend a doctor. "I know a very good doctor, but he is quite expensive. He charges $350 for the first visit, and $150 for each subsequent visit, but he really is quite good," replied the co-worker. The woman went to the doctor's office and, trying to pull a fast one and save herself some money, she cheerfully announced, "I'm back!" Not fooled for a moment, the doctor gave her a quick exam and said, "Very good; now just continue the treatment I prescribed for you on your last visit."