A psychic inflates some balloons. He requests the volunteers to come to the stage and gives them the balloons along with needles. He asks them to prick the balloons with the needles and they all burst. Then he takes a balloon and pierces it with a needle. Nothing happens. Thee balloon retains its shape.
Props: Balloons, sharp long needles, transparent cellotape and Vaseline.
Method: On the balloons which you are going to pierce with needles, stick a small piece of cellotape at both sides. Pierce the needle over the cello tape and it won't deflate. Or apply Vaseline on that portion. Gum on the cello-tape and the Vaseline seals the air from escaping. Another method is to prick me balloon at the top or bottom and the outside air pressure keeps it intact.