The line comes from The Simpsons, the long-running animated sitcom centred on the town of Springfield, where Apu runs the Kwik-E-Mart convenience store. His cheerful send-off to departing customers became one of his most recognisable catchphrases, repeated across many episodes as shoppers left the counter. As clips and soundboards spread online, the short farewell took on a second life as a reaction sound, especially for endings, departures and tongue-in-cheek customer service moments. Its brevity and instantly familiar delivery keep it useful for creators who want a quick, funny sign-off.