The exact original video behind this clip is not widely documented, so it is best understood as a short online reaction sound rather than a line tied to a single well-known film or show. Its appeal comes from the name Charlie turning an ordinary expression of surprise into something specific and quotable, which makes it easy to reuse across unrelated clips. On short-form video and meme edits, it is commonly placed at the moment of disbelief, where a familiar spoken reaction can instantly signal confusion without extra context.