It's small green pieces of paper!
Check out more in the lives of Superheroes!
But... but... they're both about irons!
And that's all in my spare time. Problem, dudes?
via: Neatorama http://www.neatorama.com/2010/07/31/iron-man-origami/
If you did this on my whiteboard in permanent marker, I wouldn't even be mad. Not one bit.