The sound comes from Super Mario Bros, Nintendo's 1985 NES platformer, where it played every time the player lost a life. Its simple descending notes were easy to remember, helped by the game's huge popularity and constant replays. As gameplay videos and memes spread online, creators began dropping the jingle over real life slips and in game fails, alongside other game death sounds like the roblox oof. It remains popular because the meaning is instant, even for viewers who have never held an NES controller.