Upon entering a little country store, the stranger noticed a sign warning, Danger! Beware of dog! posted on the glass door. Inside, he noticed a harmless old hound dog asleep on the floor beside the cash register.

Is that the dog folks are supposed to beware of? he asked the owner.

Yep, thats him, came the reply.

The stranger couldnt help but be amused. That certainly doesnt look like a dangerous dog to me. Why in the world would you post that sign?

Because, the owner explained, Before I posted that sign, people kept tripping over him.