Caldera, that's just like our public medical service, they only can book audiences with the doctor for two weeks. If the schedule is full, they ask you to call tomorrow for the 15th day. Which will be fully booked before you can get through. So you'll be asked to call "tomorrow", day after day.
As for math quizzes, here's a tough one:
There were three men in a boat. They had four cigarettes but no matches. How did they manage to smoke?
Answer: They threw one cigarette over board and made the boat a cigarette lighter.