We all know the story of the shepherd boy who cried wolf.
The boy decided to have some fun at the expense of the villagers. He shouted,
"Help, help, the wolf is here." The villagers heard him and came to
his rescue. But when they got there, they saw no wolf and the boy laughed at
them. They went away. The next day, the boy played the same trick and the same
thing happened. Then one day, while the boy was taking care of his sheep he
actually saw a wolf and shouted for help. The people in the village heard him
but this time nobody came to his rescue. They thought it was another trick and
didn't trust him anymore. He lost his sheep to the wolf.
The moral of the story is -
When people tell lies, they lose credibility. Once they
have lost credibility, even when they tell the truth, no one believes them.