Real Danger by Aldo Colombini

You introduce four colored paper bags. Each bag is folded at the top, concealing the contents. Three spectators each select a bag and they smash them flat by slamming their bag between their hands. The bags are empty. You take the last bag, reach inside it and remove a REAL bottle of beer (or other glass bottled product) with the top broken off and the edges jagged!!

- comes with necessary components
- Any bags, and any bottle can be used.