Two friends rented a boat and fished in a lake every day.
One day they caught 30 fish.
One guy said to his friend, โMark this spot so that we can come back here again tomorrow.โ
The next day, when they were driving to rent the boat, the same guy asked his friend, โDid you mark that spot?โ
His friend replied, โYeah, I put a big โXโ on the bottom of the boat.โ The first one said, โYou stupid fool!
What if they give us a different boat today.โ