There once was a czar in Russia whose name was Rudolph the Great. He was standing in his house one day with his wife. He looked out the window and saw something happening. He says to his wife, "Look honey. It's raining."
She, being the obstinate type, responded, "I don't think so, dear. I think it's snowing."
But Rudolph knew better. So he says to his wife, "Let's step outside and we'll find out."
Lo and behold, they step outside and discover it was in fact rain. And Rudolph turns to his wife and replies," I knew it was raining. Rudolph the Red knows rain, dear!"