A couple of tourists are taking a tour of Moscow.

As they are walking, the husband feels a drop of water fall on his face. He turns to his wife and says “I think it’s raining.” “No, it is definitely snowing.” Replies his wife. They started to argue, and the husband says “let’s not bicker, let’s ask our tour guide Rudolph whether it is officially snowing or raining.” They walked up to their tour guide, and ask “Comrade Rudolph, would you kindly tell us if it is snowing or raining?” “It is raining of course!” He replies. The husband turns to the wife and says “See? Rudolph the red knows rain, dear!”