The riff comes from Seinfeld, the American sitcom that aired on NBC from 1989 to 1998, where short bass stings were used to bridge scenes and signal a shift in time or place. Composer Jonathan Wolff created the show's distinctive slap-bass sound, which became inseparable from its fast, observational comedy. As clips and parodies spread online, editors began reusing the transition on its own, and it now works as instant sitcom shorthand in memes, reaction videos, and short-form edits.