digg - HOWTO: Open A Beer Bottle With A Piece Of Paper
Yeah, you can open a beer bottle using just about any solid object, like a lighter etc, so this is really about how to make paper into a solid object...
brett stern
How to Open a Beer Bottle with a lighter (reddit.com)
He can open beer bottles with his forearm. They have to be twist tops, but he just jams the top of the bottle into his arm and twists and POP! it comes off...