The bassline comes from Seinfeld, the NBC sitcom created by Larry David and Jerry Seinfeld that ran from 1989 to 1998. Composer Jonathan Wolff built the theme around a slap bass style, using short riffs to bridge scenes and reset the tone between stand up bits and apartment conversations. Because each transition riff feels slightly improvised, the sound became shorthand for observational comedy. Clips spread online as a meme for mundane frustrations, and editors still use it to signal a self aware pause.