Fishing
Larry and Harry drove 500 miles to go fishing. They paid a huge sum to rent a cabin, a similar about to rent a boat. They fished for three days and caught only one fish between them.
On the way home, Harry fiddled with a calculator while Larry drove. After an hour, Harry said, Do you realize that this one fish we caught cost us almost $2,000?
Wow! Larry said, It's a good thing we didn't catch any more.