Your Best Exam Stories?
In college, I had to take an "Art since 1945" course for my major (Studio Art). The instructor's test were divided into 2 parts: a slide identification section, and an essay section. Once everyone had the test, he would show slides of different pieces, and we had to write down the artist and name of the piece. After he had gone through all the slides, the majority of the students would move onto the essays, but some would need another look at the slides, so he would go back to any slide if you asked.
During a somewhat difficult test, after the first run through of the slides, a couple of students were asking for another look at some of the more difficult slides. One student, who apparently had the artist but not the name of a slide, asked "Can you put the Polluck back up, please?" (instead of asking for it by slide #). Without thinking, the instuctor put up the Polluck slide.
There was a moment of silence, and then another student snickered. The instructor realized what he had done (told the class that the slide that was being shown was from Polluck), and turned red. A couple of other students, who had incorrect answers, quickly changed their sheets, and more people were chuckling. Finally, the instructor announced "As some of you have caught on, this piece is from Jackson Polluck. Make sure you have this slide labelled correctly." so that everyone else could benefit from his blunder.
If I remember correctly, someone tried the same thing at the next test, but he didn't fall for it again.