When Paul Robaix (Yves Montand) plays rock-paper-scissors with a geisha, who unbeknownst to him is his wife Lucy Dell (Shirley MacLaine), a side camera view shows Montand taking his cigarette out of his mouth and putting it down before he plays the game. When he wins, the camera angle switches to MacLaine's point of view and shows Montand with the cigarette still in his mouth.
A huge premiere is planned for the movie Lucy is working on mere days after the final scene is shot; in reality, a major film of the magnitude she's starring in would take months for editing and other post-production work.