4 college guys go on a weekend road trip.

They are having such a good time that they decide to play hooky and skip out on their Monday exam in psychology. They all send their professor an email saying they had a flat tire while out of town and the professor said no problem, unexpected things happen. They could take it on Tuesday.

Celebrating their white lie they had another big night out and headed back on Monday. When they got back on campus Tuesday they went and saw their professor and she asked if they were all right, thanked them for letting her know ahead of time, and told them to get ready for the test.

Inwardly laughing they were separated into four separate rooms so as not to cheat. All four flipped over the sheet and saw only two questions:

For 5% credit, what does DSM stand for in the DSM-5?

For 95% credit, which tire went flat?