One day Ole and Lena were outside, and it started to rain. They thought nothing of it. Well, the rains kept coming until the main floor of their house became filled with water.
Lena said, "Ole, what are we going to do? The water is coming in."
"Let's go upstairs. The rain won't last that long, and it won't get up there," was Ole's reply.
So Ole and Lena went upstairs to wait for the rain to stop. After a short time Lena looked at her feet and saw they were immersed in water.
"Ole! Ole! the rain has reached us up here. What are we going to do?"
"Lena, calm down. We'll just go up on the roof. The water will NEVER reach us up there. It's too high."
After sitting on the roof for a period of time, Lena noticed a hat floating down stream. She, of course, thought that someone had just lost his hat and the current was taking the hat with it. However, when she looked at the water rising again, she noticed that the hat was coming back up stream. That hat kept going down stream and then back upstream, downstream and back upstream.
"Ole, look at that hat," she said.
Ole was as puzzled as she was. Then it suddenly hit him. He remembered what Sven had told him.
"Lena, I know why that hat is going back and forth upstream. When I talked to Sven yesterday, he said that come hell or high water he was going to mow his lawn today!!"