"Contract Between Writer and Reader is this: I, the Writer, agree to tell you, the Reader, a lie, hereinafter referred to as a story. You, the Reader, agree to suspend your disbelief in this falsehood until the end of the story, OR until I, the Writer, drop the cake."
The above comes from this talented writer's blog. Really great post.
I love the simplicity. Add anything to this and it's just messing with everyone.