Have you ever cried "wolf"?

This is related to my I told you so question. In that question I asked about reactions to a person who warns of a danger, but the danger is so unusual that no one believes the warning.

I want to ask about the reverse of this, now. When you warn of something that is dangerous, but is not about to happen, just so you can see people jump. Then, when you do it too often, you lose your credibility. Then it really happens, and you warn, and no one believes you.

Have you ever done that? What happened?