Steven Tyler, the godfather of dirty talk and sultry croons, sets the stage ablaze at the 2013 Monsters of Rock festival. His voice, a raspy, smoky instrument, grinds out lyrics that hint at carnal pleasures. Tyler's body, clad in tight leather pants and a open jacket, moves with a predatory grace, his hips swiveling as he sings. The crowd, a sea of sweaty, writhing bodies, responds in kind, their screams and cheers a symphony of lust and admiration for the rock legend's unapologetic, sexual prowess.