"I heard you can make wishes here?"
"It's not a wish, it's an exchange. What are you willing to exchange for your wish to come true?"
"I want to exchange my girlfriend for a white, rich and beautiful wife."
"Can you exchange the relationship between you and your girlfriend for a white, rich and beautiful wife? Yes."
…
"You liar, I'm going to smash your sign today."
"I'm just fulfilling your wish. You can't call me a liar just because the result is different from what you thought."