[In regards to a character associating with women of dubious character]: "He left the house with a prostate." (I don't even know what to say about this one. My dad pointed out that it might be instructive for the student to learn the different between a prostate and a loose woman HIMSELF before doing any "associating" of his own -- as, frankly, it would be much more expensive to go through prostate treatment unnecessarily than to simply, say, take the lady to dinner.)
“They are a close nit group of doctors.” (Apparently, even doctors have [very cozy] vermin infestation sometimes.)
“They have to walk for miles in the dessert to get to a gas station where they can call for help.” ( A) I would consider it a privilege to walk miles in a dessert, and B) I hate it when I come across gas stations in the pudding.)
I'm so glad I don't teach in the math department (and so are they, believe me). Besides the fact that I would cause my colleagues serious pain and agony, I can't imagine incorrect maths answers would be this funny. Scott says I just haven't ever really understand maths enough to realize how excruciatingly funny some of the wrong answers actually are. This is a good possibility.