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Description

Two nuns are ordered by their Mother Superior to paint a room in the convent, but not to get a drop of paint on their habits. 

So the nuns decide to lock the door of the room, remove their habits, and paint in the nude.

After a while theres a knock at the door. "Who is it?"

"Blind man," 

The two nuns look at each other, shrug, and decide what harm can there be  letting a blind man into the room, so they open the door.

The man comes in and says "Holy mary mother of god, sisters!  Where do you want me to put these blinds?"