Glucks isn't a new effect, but a wonderful, almost forgotten trick for the local bar or party! The trick sequence is clear and simple, but inscrutable!
You borrow a small coin, perhaps a 10-cent piece, cover it with a cloth, and then hand it to the spectator. The spectator is then asked to hold the coin and cloth over a shot glass filled with water and drop the coin into it. – A task that sounds quite simple...

And you can actually hear a real "glug" sound as the coin clearly dips into the water. But when the cloth is pulled away, the coin strangely lies next to the glass.

This is, of course, repeated immediately, but no matter what, your helper is unable to drop the coin into the glass – it keeps falling to the side.

You will receive German instructions and a secret tool that remains invisible.
You must provide your own shot glass and a cloth of your choice. The coin can also be borrowed.