The shepherd boy and his lies

Once, a naughty shepherd boy played a trick on the villagers. He said that a wolf was attacking the sheep but there wasn't any wolf there, he fooled all of them! Then he did it again and the villagers believed him. One day a wolf was attacking the sheeps, so the boy went to alert the villagers but nobody believed him. Finally, villagers went to see that there wasn't any wolf and that it was another trick. But instead thay saw dead sheep all around on the grass.