What defines a movie rating? Bad language, sexual content, violence, adult themes. But what happens when the ratings scale changes slightly and what was once considered G is now PG? The Nostalgia Critic looks back on the history of the PG rating which encompassed many hardcore films such as Jaws, Gremlins and Raiders of the Lost Ark, and compares it to newer, much tamer films like Inside Out and Frozen, all of which received the PG rating. Why suggest parental guidance for one film, but not another? Here to examine the history of the alphabetized rating system is the Critic himself. This review is rated NC.