Hold the kokanee horizontal. If you don't do this, the next step is going to make a mess.
Take the can opener or better yet, a Shotgun Key which is specifically made to shotgun beers and puncture a hole on the side of the can, near the bottom. NOTE: If you think about it, when holding the kokanee slightly horizontally, there will be a small air pocket near the corner of the can, if you can puncture the hole in the air pocket properly, no kokanee will shoot out...
Quickly place your mouth over the hole, so that you don't spill any of the kokanee, and turn the can upright.
Hold the can with your mouth on the recently made hole at the bottom, suck on the can until little or no more beer will come out and then open the can at the top.
Start drinking as fast as you can.
The ability for air to get in from the top of the can will allow the kokanee out of the bottom at a very intense rate.
i always have my kokanee this way!