How To Open A Can Without a Can Opener

Sometimes I wonder about all the Russian stuff I post, but in spite of all their problems (revolution, war, communism, Stalin, corruption, not to mention the collapse of the government) they are still one of the super powers on the world stage, and when they can get their act together they are quite capable,
    I had not heard of this technique for opening cans. It's kind of typical of what you find from someone whose mind grew up in a very different environment: just totally off the wall.

Via Marcel, who has quite a story about an attempt to open a can.