Napoleon In The Waiting Room

In a psychiatrist's waiting room two patients are having a conversation. One says to the other:

- Why are you here?

The second answers:

- I'm Napoleon, so the doctor told me to come here.

The first is curious and asks:

- How do you know that you're Napoleon?

The second responds:

- God told me I was.

At this point, a patient on the other side of the room shouts:

- NO I DIDN'T!