A man moves into a nudist colony. He receives a letter
from his mother asking him to send her a current photo
of himself in his new location. Too embarrassed to let
her know that he lives in a nudist colony, he cuts a
photo 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 accidentally sends the bottom half of the
photo. 
He is really worried when he realizes that he sent the
wrong half, 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 says,
"Thank you for the picture. Change your hair style...it
makes your nose look short!"