There is no widely documented film, television or viral-video origin for this clip, so it is best understood as a user-uploaded soundboard joke rather than a famous line. Its appeal comes from the collision of a familiar playground insult with Narnia, a fantasy world most viewers recognise instantly, which makes the phrase feel both random and oddly specific. Shared in short edits and reaction compilations, it has survived because it is short, easy to place and instantly understood without context.