Here's the 'Guillotine' trick with cards. Five cards, four of which are jokers, are shown both sides. All cards have a large hole in the center. The regular card is placed in the middle of the jokers, half-way out of the packet. Magician places his thumb through the holes in the jokers, and, to the astonishment of everyone, he proceeds to push the card down through the thumb. The cards are immediately fanned and they can be freely shown front and back.