A nun is in charge of painting the walls of a newly built classroom for Sunday School.
Not wanting to get paint on her habit, she decides that it would be best to strip completely.
She closes the curtains, disrobes, and begins painting the room.
Suddenly she hears a knock on the door.
“Who is it?” She asks.
“Blind man.” Is the answer.
Thinking there is no harm in letting a blind man enter the room while she opens the door and lets him in.
The man enters the room and says, “Nice I’m here to install the blinds.”