Easy Magic - Bar Bet: Folding Paper

Here's a simple bar bet/magic trick. Challenge a spectator to fold a piece of paper more than nine times.

The spectator can use any piece of paper of any thickness or size. The only rule is that he or she must fold the entire sheet of paper in half with each fold.

Secret:
There is simply no way to fold a piece of paper in half more than nine times. It's physically impossible.