Prepare to be blown away. This is the Mobius Strip. I connect two pieces of paper, and draw a connecting line on one side. Both sides of the paper have lines, but how? Technically, you can only draw on one side of a paper at a time. If you draw on one side of a piece of paper (which I did, as I did not switch a sides), and all sides have writing, then it is a one sided piece of paper, because you cannot draw on both sides of a piece of paper at the same time! Then, see how I cut the strip down the middle, and it does not separate into different rings! Thank you Mr. Robbins (my Geometry sub) for showing this trick to me. He says, "Just because you cannot imagine it doesn't mean it doesn't exist." (less info)