When you first look at this optical illusion image it is difficult to determine what exactly you are looking at. Here we have a black oblong shaped box with some strange white shapes inside it resembling blocks but they are actually letters making up a two word sentence. The point of this illusion is to test your eyesight to see if you can pick up what the letters say. For best results close your eyes almost completely until you can make out the words. It is easy when you know how - so what does it say?