Carrie Underwood visited Late Night With Jimmy Fallon last night, and the pair revisited their previous (and fictional) life together as a country duo covering rap songs in the "C'Rap" genre. Underwood and Fallon take on N.W.A.'s "Straight Outta Compton," Dr. Dre's "Nuthin' But a 'G' Thang," and Digital Underground's "The Humpty Dance" with clueless confidence. According to Fallon, it's "genius." That's one way to put it.