The hiyah shout comes from martial arts training, where practitioners use a short vocal burst to add power and focus to a strike. Online, that familiar call became a reusable comedy cue detached from any single film or show. Short video editors and soundboard users adopted it for parody fight scenes, anime style edits and everyday moments reframed as battles. Its popularity rests on instant recognition, as viewers understand the joke in less than a second, and on its flexibility across gaming clips, pet videos and reaction meme edits without needing context.