[CogitoCogito]

While living in Berlin, I learned that you can use books to open beer bottles.

As a matter of fact, Berliners can open beers with just about anything.

Edit: Rechtschreibung

[randomluck040]

This is valid for the rest of Germany as well. There was a challenge to open a beer with a single piece of paper as well.

[eddof13]

This is also the case in Mexico