Monty Python and the Holy Grail was released in 1975, and the line comes from the Bridge of Death sequence near the end of the film. The Bridgekeeper, played by Terry Gilliam, stops each knight with three questions before they may cross, and the color question catches out Sir Galahad when he changes his answer. The scene became one of the film's most quoted moments, and the isolated question now circulates in edits, quizzes and reaction videos where a harmless choice is treated like a life or death decision.