The riff comes from the theme music of Seinfeld, the NBC sitcom that premiered in 1989 and starred Jerry Seinfeld as a fictional version of himself. Composer Jonathan Wolff created the distinctive synthesized slap bass sound, using different short variations to bridge scenes and stand up routines in each episode. Because the show stayed in constant syndication and clips spread online, that two second sting became shorthand for a witty cutaway or an absurd everyday situation, and creators still reuse it as an instant sitcom reference.