If you've been living on this planet for the last sixty years or so at least, chances are that you have grown up seeing this on the television or on comic strips: Mom leaves the table to get something? Don't worry; you know what to do with all that unpalatable food on your plate! One swift downward motion and your trusty accomplice waiting under the table can finish it up. Not even a trace left of it anywhere and no one the wiser (or so you think!)