David Bowie and Mick Jaggers performance of Dancing in the Street has always been irresistibly silly, what with the manic arm swinging and exaggerated facial expressions. But, Mario Wienerroither takes it a step further by replacing the music with a busy silence. The minute-long clip is an absurd symphony of grunts, sniffs, and energetic foot stomping. Although it was uploaded less than a week ago, the stripped-down video has already accumulated more than a million hits. …