Jimmy Fallon is very thankful. And in this first book to come from his TV show, he expresses his gratitude for everything from the light bulb he's too lazy to replace to the F12 button on his computer's keyboard. He thanks microbreweries for making his alcoholism seem like a neat hobby. He thanks the name "Lloyd" for having two L's. Otherwise it would just sound like "Loyd."
He thanks the slow-moving family walking in front of him on the sidewalk. Without this "barricade of idiots," he might never have been forced to walk in the street and risk getting hit by a car in order to get around them. He's thankful to you, the person reading this right now. It means you're considering buying this book. You should do it. You will be thankful that you did.