Fable 318 - The Joking Shepherd

A shepherd who led his flock rather far from the village frequently indulged in the following practical joke. He called to the people
of the village to help him, crying that wolves were attacking his sheep. Two or three times. The villagers were alarmed and rushed forth,
then returned home having been fooled. But, in the end, it happened that some wolves really did appear. While they ravaged the flock,
the shepherd called out for help to the villagers. But they, imagining that he was hoaxing them as usual, didn’t bother with him.
So it was that he lost his sheep.

This fable shows that liars gain only one thing, which is not to be believed even when they tell the truth.