"Gibson has a reputation for practical jokes, puns, Stooge-inspired physical comedy, and doing outrageous things to shock people.
As a director he sometimes breaks the tension on set by having his actors perform serious scenes wearing a red clown nose. Helena Bonham Carter, who appeared alongside him in Hamlet, said of him, 'He has a very basic sense of humor. It's a bit lavatorial and not very sophisticated.' During the filming of Hamlet, Gibson would relieve pressure on the set by mooning the cast and crew, directly following a serious scene."
Mel Gibson you absolute madman