You take out a deck of cards and ask a spectator to shuffle it. You then ask them to name any two cards (just the name of the card, without the suit). After the spectator names the two cards, you put your hand on the deck of cards, and concentrate hard on it. You then instruct the spectator to turn over the deck of cards and fan through it. The cards that they name will be right next to each other.
What You Need:
A deck of cards
Act as if you are concentrating very hard on the cards when you put your hand over them. This trick works with probability.
When the spectator names two cards (tell them to name the suit), for instance, Ace and Ten, they are really naming four cards of each kind since the suit is not specified.
The theory is that out of those eight cards (Ace of Spades, Ace of Hearts, Ace of Clubs, Ace of Diamonds, Ten of Spades, Ten of Hearts, Ten of Clubs, Ten of Diamonds), at least one of the Aces in the deck will be next to one of the Tens.
If a card is between the Ace and the Ten, tell the spectator that you are not concentrating hard enough. Repeat the trick, it will work.