A man sat on his front porch every morning to drink a cup of coffee.  One morning, a nun walked past his house, wearing very ragged clothing.  The next same, the same thing happened.  Several weeks went by and every morning the same nun would walk past the man's house wearing ragged clothes.

After seeing this go on for some time, one morning the man stopped the nun and said "Sister, I have seen you walk past my house every morning for over a month, and you always wear such ragged clothing.  Is there anything that can be done so you don't have to walk around in public like this?"  The nun responded, "Thank you, but no.  It's just a bad habit of mine."