A: I don't believe the art world. B: What is it this time? A: An Andy Warhol drawing. B: He's a famous artist. A: He drew two butterflies and a flower on a napkin in a restaurant. B: Did he sign it? A: Yes. B: Is it beautiful? A: It's just black ink on a white napkin. And the napkin has food stains! B: So it's not worth much? A: Only about $30,000. B: Without the food stains, it would probably be worth more.