This line is a Halloween staple that shows up on soundboards, meme pages and October edit compilations every year, usually voiced in a slow, ghostly baritone with heavy reverb. The exact recording that became this clip is not documented, which is typical of sounds that spread through user generated boards where clips are re-uploaded and renamed until the original source is lost. Creators keep reaching for it because the phrase is instantly recognizable and needs no context: four words are enough to tell any viewer that something spooky is about to happen.