This chewing sound is used online as a general-purpose eating noise rather than a quote tied to one famous character or scene. Short mouth-sound clips like this spread through meme edits, reaction videos and prank audio because they instantly suggest snacking, annoyance or awkward silence. Its appeal comes from how recognizable the texture is even in a very short clip. Creators keep using it because it can turn an ordinary visual into something comedic, gross or oddly tense with almost no setup.