Please have a look at this web page The Devil's Dictionary , it is not as funny as the one in the book but there are some interesting defintions. I was looking for a definition of the word "teaching", but could not find it. Instead I found this one, I am sure as teachers you will understand it:
"LEARNING: The kind of ignorance distinguishing the studious."
Have a look at the web page and choose a definition for Monday's class, if you cannot find any interesting one you can make one up.