Foghorn sounds have been a staple of soundboards and meme edits because a ship's horn is instantly recognisable, even without any visual context. On short-form video and in gaming clips, the long low blast is often used to signal that something big, threatening or absurd is about to happen, a role that fits both serious trailers and parody edits. This version, tagged BRUUU, leans into that drawn-out, booming delivery, which is why creators keep returning to it for reveals, entrances and mock-dramatic warnings rather than a shorter air horn blast.