Car horns have been a staple of film, television, and radio sound design for decades because they instantly place a listener on a busy street. Online, short horn clips became popular tools for creators who needed a quick, recognisable cue without recording real traffic themselves. They appear in prank videos, driving compilations, gaming streams, and meme edits, where a single honk can signal frustration, a warning, or a joke landing. Its simplicity is the reason it endures: no context is needed, and the sound works across languages and cultures.