Defense Against The Dark Arts Cabinet Post

If you don't get the joke:

Within the Harry Potter stories, there is a rather obvious Plot Device. Every DATDA Teacher that they get turns out to either want to murder Harry, or have some horrible secret that prevents them from staying on as a teacher.

The analogy made me embarrass myself at work with laughter.

H/T: InCali (Commenter on Hot Air) 4th down from the top on the 5th page...