Atomic Water Vase (watch video).
Defies all the Laws of Nature Fill a the small vase with water, cover it with a card & invert it. Hold the card and the water does not come out. Then you remove the card, the water still doesn't come out! The card is again put over the mouth and the vase turned right side up, card removed and water poured out.
Atomic Water Vase (watch video)