Coin Thru Glass

The magician shows the audience a small plate, and puts a 2 euro coin on it.He then introduces a solid transparent glass and places it mouth downwards over the coin on the plate.

Now with a 5 cents coin he starts to tap the bottom of the glass and suddenly, the audience will see the coin "penetrate" the bottom of the glass and drop near the 2 euro coin on the plate.A wonderful effect!So easy and v