The witch laugh is a long-standing Halloween sound effect, rooted in folklore and popularised by cartoons, haunted houses and Halloween sound libraries that needed an instantly recognisable cackle for a wicked witch. Online, short versions like this one spread through soundboards and editing apps because they work as a quick audio shorthand for mischief, spookiness or a joke landing badly for the victim. Creators still use it every October and year-round for pranks, gaming clips and costume videos because audiences recognise the joke within a second, without needing any explanation.