Stress
Environmentalists are concerned for the conservation status of the stressed-out law professor. It seems that the last such species was seen maybe fifty years ago, agonizing over how carefree his life was. Every time he entered class, his students were so afraid that he might call on one of them that they complimented his dress and laughed at his jokes.
Wherever he was in line at a school function, everyone let him cut. If he wanted to take an extra day to spend time with his family, no one held it against him. Because everyone was trying to please him, he did everything to make his life more miserable, starting with eating at Denny's. Sadly, little worked, and there appear to be very few, if any, stressed-out law professors left.