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You Must be Joking? draws its laughs from an Army endurance test. Over a 48-hour period, five officers in the British army-including American transplant Michael Callan-must wend their way through a maze, retrieve a hood ornament from a Rolls Royce and steal a lock of hair from beauteous pop singer Gabriella Licudi. There's a big prize in store for the officer who finishes the test first, and since the other contestant include such middle-aged huffers and puffers as Lionel Jeffries and Denholm Elliot, it doesn't take a Rhodes scholar to figure out who the victor will be. Director Michael Winner was still in his "mad mod" period when he lensed the wacky goings-on of You Must Be Joking? His Death Wish pictures of the 1970s were in 1965 as remote as another galaxy.