RADAR, Mark and Joe are sitting in a bar.
Catcher, the bartender says, "Hey fellas, if you go into the bathroom there is a mirror. Look into the mirror and tell it anything in your life that you believe is true. If you are telling the truth then "POOF" a hundred dollars pops out, if you lie then "POOF" you'll disappear."
Mark decides to go in first and stares deeply into the mirror and proclaims, "I think that I am the most handsome guy in the world!", "POOF" a hundred dollars pops out.
Then RADAR goes in. "I think that I am the smartest man in the world," "POOF" a hundred dollars pops out.
Now it's Joe's turn. He slowly walks into the bathroom with his hands over his eyes and peeks between his fingers at the mirror.
He waits... nothing happens... he is happy.
Then he stands bravely and states, "I think..." and "POOF " he disappears.
