The clip comes from Dragon Ball, the long-running anime series centered on Goku and his friend and rival Krillin. In the scene, Krillin throws a small rock at Goku, turning an ordinary training-style prank into a memorable gag because Goku, despite his immense strength, is caught completely by surprise. Shared as a short sound online, it spread among Dragon Ball fans and meme editors who recognised the joke instantly, and it remains popular because it needs no explanation: one tiny throw, one huge overreaction, and the punchline lands immediately.