The world will end at midnight tonight -- 12:30 in Newfoundland. From poking fun at our regional differences and our cultural mosaic to joking wryly about our political culture, Canadians have a special brand of humour: * Q: How are Canadian politicians like diapers? A: They should be changed often, and for the same reason. * Q: How many Canadians does it take to change a light bulb? A: None. Canadians don't change light bulbs. We accept them the way they are. * Q: What do you call a Canadian who becomes world-famous as an actor, a scientist, a musician or an athlete? A: An American. * WARNING: Some of these jokes are sick, and a few are just plain offensive. But all of them are wildly funny and well worth retelling!