A few weeks later, I'm in a fluorescent-lit classroom in Chelsea awaiting the start of the official Mensa test. I'm sitting next to a guy who's doing a series of elaborate neck stretches, like we're about to engage in a vigorous rugby match. He's neatly laid out four types of gum on his Formica desk: Juicy Fruit, Wrigley Spearmint, Big Red, and Eclipse. I hate this guy. I hope to God he's not a genius.