The chainsaw became a horror icon after The Texas Chain Saw Massacre in 1974, where Leatherface used it as his signature weapon and its roar was central to the films sound design. That association carried into later slasher films, Halloween haunted houses, and sound effect libraries. Online, short chainsaw revs like this one spread through meme edits, horror compilations and gaming videos because they are instantly recognisable. Creators reuse it as shorthand for a maniac arriving off camera, even without showing a weapon.