The sound is associated with the Mandela Catalogue, an independent analog horror series that gained a large following on YouTube through distorted footage, unsettling narration and found-footage style horror. Short, quotable lines from the series are often lifted out of context and reused as reaction sounds, especially in horror edits, gaming videos and meme compilations where a sudden outburst fits the scene. Its staying power comes from that versatility: the line needs no setup, works across fandoms, and instantly signals anger or disbelief to viewers who recognise the series.