You draw a cross on a small pad of paper, then tear off the sheet and give the pad to a spectator who is supposed to copy you.

So he, too, draws a cross and tears off the paper. You fold your paper, he folds his. You tear your paper in half, he tears and tears – but he can't succeed, he just can't break his paper.
The viewer can try as hard as he wants, but the thin sheet of paper offers vehement resistance.

This looks hilarious and has a corresponding effect on everyone present. Finally, you can release your "victim" and easily tear his leaf into many small pieces!!!

You will receive two specially prepared blocks, ready for many, many performances.