A Crime Story

Five friends were living in a room namely Mad, Brain, Fool, Somebody and Nobody. One day Somebody killed Nobody. At that time, Brain was in the bathroom. Mad called the Police.

Mad : Is it police station?
Police : Yes. What is the matter?
Mad : Somebody killed Nobody.
Police : What???
Mad : Somebody killed Nobody.
Police : Are you Mad?
Mad : Yes, I am Mad.
Police : Don't you have Brain?
Mad : Brain is in bathroom.
Police : Are you fool?
Mad : No, Fool is reading message.