You shouldn't spend money foolishly
Jimbo has just received a large cash bonus at work days after learning he must replace the engine in his car.
Jimbo wants to use the money.
Jimbo decides to go ahead an spend the bonus on a replacement engine for his car.
Jimbo decides to go the mall where he buys a luxury coat with all the bonus money.
Jimbo's car is fixed, and he is able to save the money that wasn't used.
Jimbo is now back to where he was before the bonus and still has a car that is not working.