Ole and Sven went fishing one summer and decided to rent a boat from the resort instead of fishing from the shore. They rowed out a ways and started to fish. They caught one fish after the other. Ole says to Sven, "I wish we could mark this spot. It’s the best fishing I've seen since I was a boy." Sven replied, "I got some chalk in my tackle box, so why don't I put an X right here on the bottom of the boat?" Ole laughed, "You goofy brother of mine...What if we don't rent the same boat next time."