The lovely wife says the jewelry I bought her for Christmas has to be returned because "it's just too expensive!" Excellent. I get the credit without the credit bill!
What I will never reveal is how far I looked down the game tree before purchase.
Addendum: Do not try this at home. Without extensive knowledge of game theory and your spouse this strategy can be very dangerous to your finances, c.f. Thomas Schelling, brinksmanship.