Q: And if disaster strikes? The age-old question — what happens if you forget the corkscrew?
A: There actually is a way to get the cork out of a bottle without pushing it through. Take the bottle, and remove the foil. Then start banging it gently on a carpeted floor. What you do is create pressure, and it may take you 20 minutes to do it, but you will get the cork halfway up, and then you can pull it the rest of the way. It’s a great trick.
Source : Business Week Online
But who can be bothered waiting 20 minutes to open a bottle of wine?