This eBook is the second of a series that will serve as companions and guides to the groundbreaking book, Understanding Laughter and Humor: Why We Laugh, Why We Don't, and Why It Matters , published by Palgrave Macmillan. Inside, readers will discover how to use the Mutual Vulnerability Theory of Laughter to comprehend and appreciate physical humor in all its varied forms—slapstick, clowning, roller coaster rides, appearance insults, and even the ever-popular fart joke. As we learn about them, we gain important insights into who we are and how we might best find success in life, both as individuals and members of our respective cultures.