This is a book (now out with University of Chicago Press -- order here) in which I discuss the nature of the fascinating relationship between humor and morality in our everyday lives. The focus is not on canned jokes (which are told) but on wisecracks (which are made), the kind of improvised wit that occurs in interpersonal relationships: teasing, banter, mockery, leg-pulling, pranks, taking the piss, and more. Wisecracks raise moral concerns: sometimes they involve lying, sometimes they sting, and sometimes they play on racial or sexual stereotypes. I investigate these concerns and others in this book. One overarching thesis is that you can't have a good sense of humor without having a good sense of morality, and vice versa (which I discussed very briefly on NPR's Academic Minute). This is brought out by discussion of various psychological disorders and illnesses that predict flawed senses of humor. But it also comes from exploring how various moral (or immoral) properties in wisecracks (like meanness or deception) can make them funnier (or less funny), and how various funny (or unfunny) properties in morally-loaded activities can make them morally better (or worse). I conclude with recommendations for how to develop better senses of humor and morality, recommendations that depend on having a well-developed sense of empathy from which one can also occasionally detach in the face of life's absurdities.