This statement, while very amusing, is really quite scary. Checks are only as strong as the money in the account to pay them. Many people find the process of balancing their checkbook each month too much of a hassle. So they periodically check the amount of money in their accounts and then write a check if they guess the balance can cover the check. The surprise comes when someone to whom you wrote a check holds it for many months and then cashes it.
Banks make lots of profits off people who bounce checks.
If you do not remember how to balance your checkbook, a simple review course follows. Compare the numbers on the checks you have written to the check numbers that have cleared on your statement. Make a list of any checks that have not cleared and tally the total value of the list. These are your outstanding checks. If the numbers don't match, you need to check your addition and subtraction.