The line comes from Good Omens, the 2019 television adaptation of the novel by Neil Gaiman and Terry Pratchett, where the angel Aziraphale offers a nice egg in a trying moment. Clips and stills of the gentle offer spread quickly on Tumblr and Twitter after the series aired, becoming a shorthand for wholesome comfort in stressful situations. Fans still use it as a reaction sound because the polite, old-fashioned kindness feels both funny and sincere, making it an easy way to defuse tension without mocking anyone.