The sound comes from SpongeBob SquarePants, the long running Nickelodeon animated series created by Stephen Hillenburg that premiered in 1999. Short shouted lines from the show became staple reaction audio online because the exaggerated delivery reads clearly even without context. This lever warning sits alongside other reused SpongeBob clips like the spongebob sad song and the famous my leg gag, shared on soundboards and in edits whenever a scene needs instant cartoon alarm before something goes wrong.