You know you're a real wimp when you need someone to constantly sing about your bravery. In the 1975 classic Monty Python and the Holy Grail, Eric Idle plays a knight in King Arthur's court by the name of Sir Robin the Not-Quite-So-Brave-As-Sir-Lancelot. If the name doesn't say it all, Sir Robin is mainly known for running away from any situation, such as this encounter with a three-headed giant.