Freaky Friday 2 - How does role reversal create tension and resolve the conflict at the same time?  What is the subtext of role reversal?

Forest Gump - Epic tale told as flashback. Narrator is dimwitted but reveals the subtext by overtly repeating (awkwardly) the subtext and main theme through idiosyncratic means.  (1) Jenny prays with Forest and asks God to make her a bird so that she can “...fly far far away from here”