Old car horns have been a staple of comedy, cartoons and film sound design for decades, because their rough, unmistakable honk instantly signals a vehicle, a warning or a joke. Online, the sound is reused far beyond traffic scenes, appearing in short videos, memes and reaction edits where a single honk can replace a spoken punchline. Its short length makes it easy to drop into edits, and like a buzzer it works best as a sharp interruption rather than background noise, which is why creators keep returning to this vintage-style effect.