The exact original recording behind 4jaar is not clearly documented in the soundboard listing, so it is best understood as a short user-shared clip rather than a moment from a named show, film or song. Its appeal comes from the simplicity of the phrase: four years is easy to recognise as a long stretch of time, even for viewers who do not speak Dutch, and that makes it useful as a quick visual and verbal punchline. Shared through soundboards and short-form edits, it survives because anniversary jokes, reunions and long-awaited returns never really go out of style.