Well.... here's a list of words your teenager will on longer be using.
USA Today compiled a list of phrases and words that your teenager uses in texting and conversation, along with the definition. That way you can understand their slang a little more. Words like "fleeky", "Gucci", "Saucy".
I predict that somewhere right now, someone's "So cool" Dad is attempting to now use these words correctly to their teens friends. That never ends well!