Boiled or Fried;
1) Place a folded playing card in a glass.
2) Fill the glass with rice... Don't let anybody see steps 1& 2.
3) Have a card selected and signed.
4) M*rc*ry F*ld the selected card after making it vanish.
5) Shake the glass with your empty hand and the folded card will rise through the rice.
6) Appear to remove the card. Secretly push the already folded card back in the rice as you simultaneously appear to remove it by releasing the signed M*rc*ry F*ld C*rd.
7) Make sure you cover the duplicate card with rice so it is no longer seen.
8) Bring the spectators signs card in to view, hand it to the participant and allow them to open their signed card.
Figure that bit yourself!