That annoyed me SO MUCH because my dad who served in WWII used to tell us anecdotes about the "sex ed" (i.e. "VD IS SCARY") films the recruits had to watch. I also truly don't think a WWII vet would reference Britney Spears talking about that timeframe. Not that they wouldn't have ever seen one, possibly, but it just rings so false that it wouldn't be some kind of contemporary example like "blue movie" or "stag film" or whatever.