Laugh a while

A man with a strange problem pays a visit to a psychiatrist. The problem is that the man thinks that he is dead. The psychiatrist tries with all his skills, reason and wit to convince him otherwise, but the man won't budge.
The Psychiatrist makes him sit in front of a mirror and asks him to keep repeating to himself while sitting there "Dead men don't bleed" for three hours.
The man sincerely obliges.
After three hours the psychiatrist returns and pricks the man's finger with a blade, and it begins to bleed.
The psychiatrist says "There, now what does this prove?"
The man replied "Dead men Do bleed"!!!!!!!!