There's an old story about that. An art dealer approached Picasso to authenticate some drawings. "All fake!", says Picasso. A friend who watched this was skep

There's an old story about that. An art dealer approached Picasso to authenticate some drawings. "All fake!", says Picasso. A friend who watched this was skeptical -- the drawings looked real to him. So, on the sly, he gave the dealer one of his own Picasso drawings and had him come back. "Fake!", says Picasso. "But Pablo... I saw you draw that. You gave it to me with your own hands." "Bah. Anyone can do a fake Picasso. I often do them myself."