The sound takes its name from Saitama's signature attack in One Punch Man, the famously overpowered hero who defeats most opponents with a single blow but unleashes a barrage of normal punches against stronger enemies. Fans clipped the rapid impact sequence from fight scenes and shared it as a short meme sound, where it became shorthand for a fight that is already decided. It remains popular because the joke is instantly clear even without context: one side is not just winning, but winning far too easily.