The sound comes from Totally Accurate Battle Simulator, the physics-based battle game by Landfall, where the Clubber is a basic unit from the Tribal faction armed with a wooden club. Each unit in the game has its own short attack vocalisations, and this third Clubber variant circulated as an isolated clip on soundboards separate from gameplay. It stayed popular because TABS battles are widely clipped and remixed online, and the grunt works even without footage, immediately signalling a silly primitive attack in edits, streams and meme compilations shared by players.