Dr. Peter McGraw, founder of the Humor Research Lab at the University of Colorado Boulder, teamed up with journalist Joel Warner on a far-reaching search for the secret behind humor. The duo conducted humor experiments to wince-worthy, hilarious, and illuminating results. In their search, they questioned countless experts, from comedians like Louis C. K. to rat-tickling researchers. As a final test, McGraw uses everything they learned to attempt stand-up at the world's largest comedy festival.