Unlike a clip taken from a film or television show, a truck horn klaxon is a generic sound effect rather than a line tied to one character or scene. Similar vehicle horns have long been used in comedy, cartoons and traffic footage to signal size, danger or surprise, and short recordings of them are now widely shared as downloadable effects for editors. Its appeal online comes from that instant recognition: listeners know immediately that a large vehicle is involved, even without seeing it, which makes it a reliable punchline, warning or transition in short-form video.