Just when you thought it couldn't get any funnier... This edition of the Pretty Good Joke Book includes all the puns, one-liners, knock-knocks, and knee-slappers of its predecessors, plus dozens more. Includes every joke (yes, even the groaners) from all of the almost-annual fan favorite show, plus many not in the broadcasts. With an introduction by Garrison Keillor on the importance of humor and how to tell a joke. Softcover.