“The most interesting book I have read in years. . . . WTF?! is like Freakonomics on steroids.” —Steven D. Levitt, New York Times–bestselling coauthor of Freakonomics Did you know that “pre-owned” wives were sold at auction in nineteenth-century England? That today, in Liberia, accused criminals sometimes drink poison to determine their fate? How about the fact that, for 250 years, Italy criminally prosecuted cockroaches and crickets? Do you wonder why? Then this book is for you! Introducing us to a cast of colorful characters, economist Peter T. Leeson explains how to use economic thinking to reveal the hidden sense behind seemingly senseless human behavior—including your own. Leeson shows that far from “irrational” or “accidents of history,” humanity’s most outlandish rituals are ingenious solutions to pressing problems—developed by clever people, driven by incentives, and tailor-made for their time and place. "A fascinating tour of some of the world’s strangest customs and behaviors, led by a brilliant, funny, and eccentric tour guide dedicated to the proposition that no matter how strange it looks, there’s always a reason for it—and a lesson to be learned by discovering that reason.” —Steven E. Landsburg, author of The Armchair Economist