I LOVE guinness bottles!
Get a pair of needle nose pliers (with the rought jaws, not smooth)
With a little practice, you can pull it out pretty quickly.
Then Slit the plastic label with a small knife (but not straight on, or you will scatch the bottle and dull the knife).
I'm not the first guy who fell in love with a woman that he met at a restaurant who turned out to be the daughter of a kidnapped scientist, only to lose her to her childhood lover who she last saw on a deserted island, who then turned out fifteen years later to be the leader of the French underground.