Two nuns are painting an office

Two nuns are painting an office at the rectory on a hot summer day. One says to the other, we should take off our habits so as to not get paint on them. So both nuns are painting the room in the nude when they hear a knock on the door. Flustered, one says, "Who is it?" followed by a man's voice saying, "Blind man." Figuring the man wouldn't see anything, they open the door. The man walks in and says, "Nice tits ladies. Now, where do you want me to install these blinds?"