It is used online as a short standalone voice meme rather than as a clip tied to a single well known film or show in most shares. The phrase itself comes from the traditional way people call pigs on farms, repeating a soft call to get their attention. As soundboards and short form video grew, the sing-song version was cut to about a second and reused for pets, greedy characters and farm scenes, where its familiarity makes the joke clear even without context.