Screwed Deck by Paul Harris (watch video).
Screw two halves of a box of cards together (like a pool cue ).
One half is the back of the box and the other half is the front!
You then remove the deck inside, only to find out it's all screwed up too!
Give the deck one more EXTRA twist...it becomes an ordinary examinable deck of cards !
Bicycle Poker Screwed Deck by Paul Harris (watch video)