Maybe I am a verb. Maybe I run along the Z axis. And the people of X & Y I meet seem to perceive me as being of their world, because I appear 2-dimensional like them, but really, I live on the Z, which is why I can see where they're coming from, but they have no idea where I'm coming from. But then, upon meeting another being who runs the Z, it gives me proof that our world is just as real as their world.