Australia's sense of humor is fairly dry, irreverent, and ironic. He also engages in self-mockery fairly often.
Comedy and humor is very important to him, and even has a festival dedicated to the art.
(Australian humor is indeed characterized as dry, irreverent, and ironic. They also use self-mockery as a form of comedy a lot. Australia has the Melbourne International Comedy Festival, which is one of the largest comedy festivals in the world.
