A few of the funniest ratings of college professors from RateMyProfessor.com:
#19: "His class was like milk, it was good for two weeks."
#16: "Three of my friends got A's in his class and my friends are dumb."
#12: "Instant amnesia walking into this class. I swear he breathes sleeping gas."
#10: "Not only is the book a better teacher, it also has a better personality."
#6: "Very good course, because I only went to one class."
#5: "He will destroy you like an academic ninja."
And the big winner, #1:
"She hates you already."