You walk up to a couple. Let the girl choose a card. Free choice. Her man then can positively name the card. All you need is a deck of cards.
At the end, the girl will be impressed, her man will be her hero. Everybody`s happy. The couple`s happy. That`s what you want: a happy audience.
– use a couple or 2 complete strangers
– no stooges
– various revelation techniques included