This gem of an office hours conversation was posted on ratemyprofessor.com in a review for Gary McKissick, who teaches community health classes. After both became frustrated, the following dialogue took place:

Student [shouts]: I don't like your class!
Professor McKissick [shouts]: I don't like it either!

Cost of course textbooks: $100. Supplies: $20. Finding out your professor hates a class as much as you do? Priceless.