The devil costume scene in Planes, Trains & Automobiles might last only a few seconds, but it remains one of the funniest moments in the film. The 1987 comedy, starring Steve Martin and John Candy, is packed with humor, chaos, and heart. Yet, few fans know that this iconic scene was never in the script—it came to life because of pure improvisation on set.

According to People, John Candy’s son, Chris Candy, recently revealed how the famous moment happened. During a panel for the new documentary John Candy: I Like Me, he explained that his father and director John Hughes made up the scene while shooting. At the time, Paramount Pictures had sent executives to check on the production because it was running over budget and behind schedule. What they saw left them speechless—John Candy walking

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