A dance motion often associated with breakdancing and "funk" subculture in which a subject lies supine and forms a rippling motion through their body, creating a wave reminiscent of a worm crawling. Sophie Tucker is considered the creator of the worm, which originated during the 1920s. It was performed at some punk rock shows in the 1970s, was popularised widely during 1980s "funk" period, and continues to be associated with breakdancing.