Karadoc is a knight in Kaamelott, the French television comedy series created by Alexandre Astier, and the line comes from his famously blunt way of judging food, plans and other people's ideas. French fans clipped the delivery and shared it as a short reaction sound, where its deadpan tone made it easy to reuse outside the original scene. It has stayed popular because the insult is short, instantly understood by French-speaking audiences, and fits almost any moment when something is clearly not good enough.