A few weeks ago, my friend Jon Armstrong appeared with his Tiny Plunger on the TV series, Penn & Teller: Fool Us. If you haven't see the show (which airs on the CW network Monday evenings), magicians come out and perform and they "win" if they do a trick which fools Penn and/or Teller. Jon scored 50%. He fooled Penn but Teller had once performed an act not unlike this so all Jon won was a nice showcase on television and a lot of praise from Penn Jillette.
The show only gave us a shortened version of Jon's routine so here's the entire thing as recorded recently at the Magic Castle. I have seen a lot of magic in my day and this is one of the cleverest presentations I've ever seen — and one which genuinely baffles a lot of experienced magicians…