The timpani, also called the kettle drum, has long been used in orchestras to signal drama and ceremony, and that same rolling sound became a staple of classic cartoon scoring, where it underlined pratfalls, surprises and grand entrances. As short-form video and meme editing grew, editors lifted the familiar roll from cartoon sound libraries and reused it as a quick, instantly recognisable cue for suspense. It endures because listeners already associate the build with something about to happen, so it needs no explanation.