Dear Professor Stressor,
I've been at this school for four long years and have never even considered taking one of your courses or any others in your discipline. But now that I need to take my very last option so I can graduate, I suddenly realize how unbelievably interesting, worthwhile, and important your summer course is. Please leapfrog me into this full course ahead of all the students on the wait list. Also, if you could help me find a way to get notes so I don't have to attend class all the time—I got other stuff going on—that would be great. Thanks.