The phrase is Norwegian and uses faen as a strong swear word for emphasis, giving the denial a much angrier tone than a plain not me would have. Because the original source is not widely documented, the clip spreads mainly as a standalone reaction sound shared between friends and reused in short edits. Its brevity helps it work without context, even for listeners who do not speak Norwegian, because the stressed shouting clearly signals protest. That makes it a lasting choice for blame, denial and caught in the act jokes online.