As serious as things were during the shoot as well as in the story itself, the cast of The Godfather found plenty of time for practical jokes. Initially, the other actors were reportedly awestruck by Marlon Brando, but once filming commenced, they began to relax. In a sign of budding friendship with the legendary actor, James Caan and Robert Duvall began dropping their pants and mooning Brando at odd times during filming. But Brando upstaged them all by dropping trou while cameras were being set up for the wedding photo scene, mooning nearly 500 extras on the set. For this act, Caan and Duvall presented Brando with a belt that read “Mighty Moon King.”