After I watched slang evolve multiple times across only a couple of generations, I stopped worrying about being in, and realized as a writer that slang older than the parental generation stays classy. Also, there's no correct way to use a living language. References might tell us what was the norm at the moment they were published, but they were obsolete before they were sold.

I may have to invent a dialect combining Newspeak and Nadsat and go extra crunchy.