The horn is associated with RMS Titanic, the British ocean liner that sank on its maiden voyage in 1912 after striking an iceberg. Over the following century, the ship became one of the most retold stories in film, television, and documentaries, and its deep horn became shorthand for scale, tragedy, and doomed ambition. Online, the clip spread through soundboards and editing packs, where creators reuse it far beyond Titanic content, using it to announce something enormous, warn of disaster, or joke that a situation is going down with the ship.