Supt. Wong: I remember a story. Two fools are waiting for their kidney transplant but only one kidney is available. Thus they play a game. They put a card on each others pockets. Whoever guesses the card in his own pocket wins.
Hon Sam: You know I can see your card.
Supt. Wong: I think so too
Hon Sam: I will beat you.
Supt. Wong: Let's see. We should be more careful.
Hon Sam: I will.
Supt. Wong: By the way, whoever loses the game dies.