THE ringmaster is all skin and bone. He thrusts and grinds his pelvis, pouts, jabs pointed fingers in the air. He writhes and struts, he hunches and hops, cracks his whip and the Big Top goes wild. This is no ordinary travelling show. It’s only rock and roll, but they love it. And the master of ceremonies is Jumping Jackflash at his howling best—all rubber lips and sexy menace.