A man moves into a nudist colony, without telling his extremely conservative mother what it is. He receives a letter from his mother asking him to send her a current picture.
Too embarrassed to let her know that he lives in a nudist colony, he cuts a picture in half and sends her the top part.
Later he receives another letter asking him to send a picture to his grandmother. The man cuts another picture in half, but accidently sends the bottom half.
He is really worried when he realizes that he sent the wrong part, but then remembers how bad his grandmother's eyesight is and hopes she won't notice.
A few weeks later he receives a letter from his grandmother. It reads, "Thank you for the picture. I think it is very nice and it is hanging on my wall as I write this, but I reckon you should change your hairstyle -- it makes your nose look too long."