Politically correct

 A busload of politicians was driving down a country road when the bus suddenly ran off the road and crashed into an old farmer's field. The old farmer heard the crash and rushed over to investigate. He then began digging a large grave to bury the politicians. A few hours later, the local sheriff was driving past the farmer's field and noticed the bus wreck. He approached the old farmer and asked where had all the politicians gone. The old farmer explained that he'd buried all of them. "Were they all dead?" asked the puzzled sheriff. "Well, some of them said they weren't," said the old farmer, "but you know how them politicians lie."