The album, Bo Diddley, was rock and roll's Big Bang, dripping with grease and humor and understated swagger. The simplest ingredients - a guitar, a drum, and maracas - were packed in a gunny sack and slung over the shoulder of a smiling guy with a slick process and a wild plaid jacket, who took it and ran headfirst into oncoming traffic. Reckless, yet crazy cool. He made it sound easy. Geniuses can do that.