Create a single sided object... that object that your geometry teacher shows you just to mess with your head. You take a strip of paper 1" wide X 12" in length, approx. Hold the ends, then twist one end 180%%d and tape it to the other end, making a loop... then if you draw a line on one side continuously through the loop... you'll draw on both sides, and end up where you started... giving reason to the argument that the shape indeed only has one side, and thickness... which should be impossible.
Anyways... Autocad and importing it into 3dsmax both couldn't handle the shape for me... if someone can do it without it getting all artifacty or jittered... i'd love to know how.
here's the best screen cap I can do.
I think they don't totally understand it, because there is no normal face... because it switches or whatever... anyways, it's one solid object 1/16" thick, with one side.. so to speak.
It may be easy to model for some... but there's a bit of tricks to it.