This sound is best known online as a generic evil laugh effect rather than a quote tied to one specific film or character. Short ominous laughs like this have circulated for years in meme edits, prank clips, horror montages and reaction videos. Creators keep using them because the meaning is instantly clear across languages: someone is being sneaky, dramatic or openly villainous. It often appears alongside exaggerated suspense cues such as dun dun dunnnnnnnn to make a twist feel bigger and more comedic.