Breaking a bottle with your bare hands isn't advisable, and even those who have experience breaking bottles with a punch or chop know it's an easy way to damage or permanently disfigure your hand.
But there's a tricky way to break a bottle with your bare hands that relies on science and an understanding of how bottles are made rather than martial arts training or hands of steel.
This trick is also a great way to make an Impossible Bottle if you manage to get the bottle's base disc to come out clean without cracking the body of the bottle.
All you have to do is remove the base, insert a baseball into the bottle body and reglue the base into place with epoxy and voila! You've got an Impossible baseball in a beer bottle, which will blow people's minds!
-Via Laughing Squid