Arthur is a long-running American animated series based on Marc Brown's children's books, which premiered on PBS in 1996 and followed Arthur Read through school, family life and friendship. Flashback transitions became a recognisable part of children's television editing, using warped, dreamlike audio to separate present-day scenes from memories. Online, creators clipped this kind of transition and reused it as a shorthand for any throwback, especially in short-form videos and reaction edits where a quick trip to the past sets up the joke.