TikTok is obsessed with a bold new recipe: watermelon and yellow mustard.The viral treat has people wondering if it's "bussin" or "disgusting" .TikTok users like @yayayayummy are singing the praises of watermelon and French's yellow mustard.Grammy-winning singer and recent-vegan, Lizzo decided to try the unusual combo after spotting it on TikTok.Lizzo stitched @yayayayummy's video to conduct her own taste test.Lizzo cut up a watermelon into sections, squeezed some yellow mustard onto a slice and took a bite.She made a confused face, then proceed to take another bite."I ended up just eating it with Tajin," Lizzo wrote in the caption