PenaCoin - A Coin Penetrates A Sheet Of Rubber
Gather your friends around a nice tall glass of water, they'll need a refresher after this astonishing trick! Wrap a solid piece of rubber over the glass's mouth and 'plunk' drop a solid quarter straight through it. Let them examine the glass, rubber, and quarter all they like; they'll only come away even more impressed with your dizzying magical skills. Instructions included.