Brrrr. Brrr, I say. It's cold. If I were Johnny Carson, I'd say, "It's so cold tonight..." and my audience would yell, "How cold is it?" And I'd say, "It's so cold that ______________." The blank would be filled with a funny joke.
When I was in college, I heard a line of a play, I think it was by Thornton Wilder: "It's so cold, the dogs are sticking to the sidewalks." Makes no sense, but at that age I thought it was hilarious.