Nail Through Balloon Trick

A metal tube, 2 nails and a balloon. All of which can be examined. Slide the balloon through the metal tube, and you can then pass not 1 but 2 nails through the balloon. But the balloon does not pop How is this possible You can then remove the nails, slide the balloon out of the metal tube, and everything can be examined. How is it done Magic Well ok, we do include instructions. Does this magic trick need and sleight of hand or special magician skills No, anyone can do the trick. Of course, a