Alarm gongs have long been used in fire stations and other public buildings to alert crews and clear a room quickly, which is why the sound still carries an instant sense of official urgency. Online, the same tone is widely shared as a short sound effect for videos, streams, and memes, often under German search terms such as feuerwehr gong because of its strong association with fire services. Creators keep returning to it because a single strike needs no explanation and works across languages.