The sound comes from Bellboy Donald, a Donald Duck cartoon released on December 18, 1942, in which Donald works as a hotel bellboy and gets into escalating comic trouble. The flapping and his rapid boi-yoi-yoi-yoing vocalisation capture the character's classic short temper and frantic energy, traits that made early Disney shorts instantly recognisable. Clips from those cartoons later circulated online as reaction sounds, and this short excerpt survives because it is instantly identifiable, easy to drop into a joke, and still feels funny without any context.