An antique dealer is walking through town and sees a cat drinking milk from a saucer in a shop window. He is shocked when he realizes that the saucer is very rare and expensive.
He enters the shop and asks the owner “Hey, I really like the cat. Would you be willing to sell it to me?”
The store owner replies “Not for sale.”
The antique dealer thinking quickly responds “I’ll give you $100 for it.”
The shop owner agrees and the antique dealer grabs the cat. He acts like he is about to leave then adds “Oh, would you mind throwing in the saucer, the cat seems to like it.”
The shop owner replies “No, that’s my lucky saucer. I’ve sold hundreds of cats since I got it.”