Peekaboo has long been a simple game of hiding and suddenly appearing, and that same instant payoff is why the sound travels so well in short-form video. The clip is short enough to fit a single cut, a transition or a reaction shot without slowing a joke down, which makes it useful across memes, gaming clips and vlogs. Its appeal is not a famous line or a recognisable scene, but timing: a tiny burst of surprise that tells viewers something unexpected is about to appear, and that expectation is what keeps creators reusing it.