Once upon a time there was a village with a young boy who had a job watching the village's sheep. Two times he called out, "Wolf! Wolf!" Each time the villagers came running to help the boy. And both times the boy just laughed at the villagers and called them names.
But then the wolf really did come and start eating the sheep. The boy called, "Wolf! Wolf!" but the villagers just ignored his calls. They thought he was just trying to trick them again. The wolf took his time and had a huge meal of the entire flock of sheep.
Aesop was smart.
What I hate most about this sort of thing is the massive, pending, lethal, certainty that I'm simply setting myself up for an unpleasant "I told you so."