It's wrong to pay with a fake check.
Tony is shopping to buy his girlfriend a necklace, but the one he wants is pretty expensive.
Tony wants to try to get the gift.
Tony talks the salesman down in price and pays for the necklace with his debit card.
Tony takes a check from a checkbook for an account he no longer has and gives it to the clerk.
Tony is proud of himself for using his negotiation skills to get what he wanted and is exited to give the necklace to his girlfriend.
The clerk calls the police because the check was fraudulent and presses charges against Tony.