A Nun was taking a shower one day and she heard the doorbell ring, she yelled, "Who is it?"

And the person ringing the doorbell yelled, "I'm the blind man."

So the Nun got out of the shower and wrapped her hair in a towel, she didn't bother putting a towel around herself because the person behind the door was blind.

She opened the door and said, "What do you want?", and the man said, "I'm here to check your blinds."