Train horns have long been used in videos as a sudden, attention-grabbing blast, and the jumpscare version became a staple of meme and prank editing as short clips spread across social media. Creators use the familiar railway sound because everyone recognises it instantly, yet hearing it at full volume in an unexpected place still feels alarming. It works in reaction videos, gaming clips, and short-form edits where a single loud moment can reset the mood. Its simplicity keeps it useful: no setup is needed, and the shock lands every time.