Effect:
You show the pictures of 6 beautiful girls you received from a dating site called Flirt For Fun. The spectator is allowed to choose one of the six girls for a "Night on the Town". The spectator has a free choice, no force is involved. The chosen girl is removed from the pack and placed on the table, all the other cards are shown one more time while you mention that he had a free choice but he selected the only ugly girl in of the group. Wait for the puzzled look to appear on the face of your spectator. Place the pack aside and pick up the card he selected. Tell him that he really does not want to wake up next to her and slowly turn around the card so that he can see what you are talking about.