Napoleon

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!"