Why did you give me an "F"?

I just read a hilarious post on how to give grades to students, and just have to share. Ahh, the good old days of teaching. I'm so glad that I don't have to worry about that stuff now, but it sure is fun to remember. Any current or former teacher will appreciate these helpful hints from ChemJerk. I'm not sure if a nonteacher can truly appreciate it, but do correct me if I'm wrong.