what you're going to tell me

1) I know what you're going to tell me.

2) I know everything you're going to tell me.

3) I know all you're going to tell me.

Do these mean:

a) I can predict what you are going to tell me.

or:

b) You are not going to teach me anything by telling me what you are going to tell me, (for example: you are going to talk about the theory of relativity, but what you are going to say about it is already part of my knowledge)

Gratefully,

Navi