Inappropriate Use of Digital Media

My brother-in-law sent an inappropriate picture to a friend as a joke.  That friend then shared the image on social media.  There were a couple of inappropriate uses of digital media in this story.  A teacher than saw the photo and realized who it was.  My brother-in-law was then suspended from school for a while.  My brother-in-law was embarrassed and felt ashamed.  I am not sure what the friend that posted felt.  The picture shouldn't have been sent in the first place and the friend should have never shared it without permission.