What is the moral of the story of 'The Boy who cried Wolf'?

The moral of the story is that we should not lie. a liar will not be believed, even when he tells the truth.

after the boy's tricks make the villagers believe he is a liar, when the real wolf comes, his flock is slaughtered because they believe it is just another trick. by ignoring his elders who warn him not to cry 'wolf!' unless there is a wolf, he has lost his flock.

The moral is that if a person lies too much that when he/she actually needs help no one will come or believe them because they think that it is just another story/lie and a waste of time to respond.