If you consider the time needed to drill the hole, it's not really a very fast method, even if it is cheating!
The fastest (cheating) method is to hold the bottle upright, and hit (downward) on the mouth.
http://www.livescience.com/24469-bottle-exploding-secret-revealed.htmlHere's a cool slow motion video of that phenomenon:https://youtu.be/lj3x2U4CaEs?t=106
If you consider the time
If you consider the time needed to drill the hole, it's not really a very fast method, even if it is cheating!
The fastest (cheating) method is to hold the bottle upright, and hit (downward) on the mouth.
http://www.livescience.com/24469-bottle-exploding-secret-revealed.html
Here's a cool slow motion video of that phenomenon:
https://youtu.be/lj3x2U4CaEs?t=106