The clip comes from Home Defense, a Donald Duck cartoon released on November 26, 1943, in which Donald prepares for a wartime air raid while dealing with his nephews. The yawn was later included in cartoon sound collections, credited in some libraries to The Hollywood Edge, which helped it circulate beyond the original short. Online, editors reuse classic Disney character noises like this as instant reaction sounds, because a single expressive noise communicates tiredness without needing context, subtitles or the original scene to understand it.