La_fessée_-_The_spanking_-_court-métrage_-_with_english_&_brazilian_sub(720p)

The 9 year old max offers his mother jody the instruction book for a perfect spanking. He explains to her that a good snack on the bottom is effective for the education of a child. Together max and jody put into practice the manual.
Why do we call "crusty" when someone is hurting an animal, "violence" when hurting an adulte and "education" when hurting a child?
A short film written and directed by Yves pinol