The line comes from The Dark Knight from 2008, spoken by the Joker, played by Heath Ledger, during his confrontation with Harvey Dent. In the scene he rejects the idea that he is a careful schemer, presenting himself instead as an agent of chaos who simply does things. The German dubbed version has since circulated on soundboards and in short video edits, where creators use the question on its own as a sarcastic reply. Its staying power comes from how easily it fits any situation where a supposed plan looks anything but planned.