Why are three goals called a hat trick? Why is "Take Me Out to the Ballgame" sung during the seventh-inning stretch? Why don't the Cleveland Browns have a logo on their helmet? Why do golf balls have dimples? Why do Olympic swimmers flip when they turn at the end of the pool? Divided into four levels of difficulty - a professional level, an All-Star level, an MVP level and a Hall of Fame level - each answer is provided not only with an in-depth explanation...