The Creator: Haley Sharpe (@yodelinghaley) The Backstory: Sharpe, an 18-year-old from Huntsville, Ala., had already been posting comedic, dance-centric TikTok videos for months before a friend introduced her to the song in late 2019. “She asked if I’d heard Doja Cat’s new album,” recalls Sharpe. “I hadn’t, so she played ‘Say So.’ That’s when I thought I should make a TikTok dance to it, so I did.” Why It Took Off: Early participation from TikTok star Charli D’Amelio and beauty personality James Charles helped the dance spread late last year, but Sharpe says the biggest factor in its rise was its simplicity. The routine uses a lot of “arm motions, and not a lot of moving your feet, so anyone can do it,” she says. “People can easily follow along.”