A man from Montana flew in to Phoenix to visit his family for Thanksgiving. When he stepped off the plane, he noticed the temperature was about 60 degrees. Despite the relatively warm weather, everyone was wearing coats, and there was a snow-like substance sprinkled all over the ground.

When he arrived at his family's house, he told them what he saw. "Everyone was wearing heavy coats, there is white powder all over the ground, and it's not even cold. What's going on?"

"What do you mean?" asked his Uncle Bob. "This is the time of year when you're supposed to wear coats. What does cold have to do with anything?"

"People wear coats to keep warm. You don't need them here in Phoenix," said the man.

"Yeah, right," replied Uncle Bob. "It's always warm -- Why would anyone wear a coat to keep warm? Next thing you know, you're going to try and tell us that snow just falls out of the sky all on its own."