Collision is the ultimate ending to your favorite card routine. Have a card selected, then tear off a corner (the spectator's business card can be used as well). The card is folded, then mixed with other folded cards inside a plastic bag. The folded cards are tossed into the air by the spectator. You stab a card mid-air with a fork (examined at the start). However, it's not just any card...IT'S THE SPECTATOR'S!