Pinkie Pie is the bubbly, hyperactive pony from My Little Pony: Friendship is Magic, a character famous for sudden bursts of excitement and exaggerated cartoon reactions. Short clips of her voice have long circulated online as reaction sounds, because her high-energy delivery reads instantly even out of context. This surprise gasp fits that pattern perfectly: it is brief, expressive and easy to drop into edits, streams and memes whenever something unexpected happens, which is why creators keep reaching for it years after the show first aired.