I have heard many parents defend letting their very young children watch PG-13 movies. They believe the children have fun and understand it is just pretend. Interestingly, the subject often comes up because the child, who supposedly loved the movie, is still talking about it days later. Not in a joyful way, but in such a manner it is obvious the child was very upset by the images she saw. I have even seen parents puzzled why their child is having nightmares or acting out violent scenes from the movie.