I wouldn't suggest this, as 1- it probably takes several minutes to open the can and 2- because you erode the top rim away, there's a good chance that you could have metal filings in your food that will literally cut through your digestive system. In short, at the end of the world, have a can opener.

I think it's a soil collector for collecting soil samples from deep underground. You get it as deep as you can, Twist and bring it back up for a sample. Saber tooth tiger XXL

the guy in the cafeteria quitting is That guy with the glasses, aka The nostalgia critic.. I never knew he worked at a cafeteria! cool stuff!