Well, it only gets interesting at the very end, when this University of Chicago philosophy professor defends offensive jokes; I'm not sure he does a good job of it though (basically saying that correcting the joke doesn't meaningfully solve any problems.) As for the rest of this short book, it frankly doesn't feel all that insightful, for instance, saying that jokes require some conditional knowledge/emotion from the receiver in order to work, or that Jewish jokes often play with absurd logic perhaps because Talmudic interpretation involves twisting logic games. There are a great deal of street jokes reprinted here, including a Polish joke I once heard Norm Macdonald tell, but I would argue that's not necessarily a good thing. I mean, I was promised philosophy. Two stars.