A man and his wife are walking through St. Petersburg, USSR They feel a slight precipitation. ""Must be rain"" the man says. ""No, it's snow."" says his wife. After arguing about the precipitation, the man decides to ask a third party. They stop a patrolling policeman, Officer Rudolph. ""Excuse me Officer Rudolph, is this rain or snow?"" the man asks ""It is rain, comrade."" Officer Rudolph answers. The man turns to his wife and says ""See? Rudolph the red knows rain, dear.""