Book excerpt: Here's a sparkling collection of unsullied humor, ideal for any age and situation. Following in the footsteps of other best-selling Barbour joke books-such as Noah's Favorite Animal Jokes, The World's Greatest Collection of Church Jokes, and Knock, Knock, Who's There?-the entries in 777 Great Clean Jokes are categorized by topic and promise hours of fun and laughter for personal reading, church activities, and speech or sermon preparation.