I know that you're busy but here is a real joke.
I had an exam about two weeks ago. But when on the exam day I wasn't sleeping that day; so I called the professor and asked her to make the exam for me on the next day. She told me, it would be on the next Wensday... On that wensday I went to the university and she told me that she needs to go and we'll delay the exam for sunday. On sunday, I have a lecture with her, where I'm the one who should to present the lecture for the students. When I remind her of this story, she told me that on saterday there is another class who is going to take the same subject (lecture) so I can present the lecture for them; and I can do the exam on sunday. I can on saterday; I made the presentation...
On sunday... i came for the exam but she told me that she liked the way of how I presented the lecture; so she asked me to represent the lecture in front of the students again in this class and to delay the exam for the next wensday!!
So I'm waiting for this Wensday to see whether I'm going to make this exam or not... :o)

Thinking of you,
Mohamad