The Graduate.
Teacher (to class in philosophy). "What are the properties of heat, Willie?"
Willie. "The properties of heat are to bake, cook, roast—"
Teacher. "Stop—next. What are the properties of heat?"
Johnny. "The properties of heat is that it expands bodies, while cold contracts them."
Teacher. "Very good. Can you give me an example?"
Johnny. "Yes, sir. In summer, when it is very hot, the day is long; in winter, when it is cold, it gets to be very short."