It's hurtful to ridicule your child.
Joe's son Josh is in the high school play.
Joe wants to give Josh some feedback.
Joe gives Josh some constructive criticism.
Joe says Josh's acting skills are awful, and he should be ashamed.
Josh uses Joe's criticism to hone his craft, growing up to be a famous actor.
Josh abandons his dream of being a professional actor, working in retail for the rest of his life.