Riddle: Jade works at a luxury store in the city. One day, a woman came up to her and decided to purchase a $1,000 purse. This customer gave Jade two bills and didn't even need change, but Jade refused to sell the item to the woman and called the police. Why?
Answer: The purse costs $1,000, but the woman gave Jade only two bills and didn't need any change. This means that the two bills were worth $500 each, and those bills don't exist.