I am 17 and yes I do hear a lot of people use words like such, but I never have. They sound wrong to me. (Not saying they ARE wrong)

I do say "sweet" but that word makes sense to me.

Other "new" (They may not be new but I have been hearing them a lot lately)words I hear are : Hardcore, uber, crack, dunzo (Those are the only ones I can think of as of right now but I know I missed many)