The duck quack is one of the most recognisable animal sounds in online editing, used for decades in cartoons, comedy sketches and children's media before becoming a staple of short-form video and meme soundboards. Because almost everyone recognises it instantly, creators use it as shorthand for silliness, confusion or an unexpected interruption. It remains popular because it is short, clean and universally understood, working across languages without needing any explanation or context.