Manhattan, New York City:
A blonde goes to the bank and asks for a loan of $500, which she will return after 6 months, when she's back from her vacation. The bank manager tells her she needs to give him a guarantee so that he can be sure she'll return the money. She says "I have a Rolls-Royce, I'll give it to you as a guarantee". The bank manager agrees and gives her the money, while she hands him the car keys. Then he orders one of the employees to park it in the bank's parking lot.
6 months later the blonde comes back to the bank and gives the manager $500 + interest. The manager tells her "You know, we did some checking on you, you're one of the richest women in the world. Why on earth did you need a loan of $500?". The blonde replies "You idiot, where else could I pay $20 a week to park my car in Manhattan?".