“Humor comes out of the unexpected: If there’s no surprise, there’s no laugh. In a triple, as discussed in chapter seven, the first two lines are often straight lines; this is the realistic element. The third line is the surprise twist—logically related to the first two lines, but unexpected and exaggerated. Realism is the setup, while exaggeration is the joke. “Get your facts first,” wrote Mark Twain, “and then you can distort them as much as you please.”