If you're 21, you're [b]still[/b] not an adult.

I remember what I was like at 21, and I'd like to think I was mature for my age (comparing myself to my 20-40 year old friends I had at the time), but I can hardly say I was an "adult."

Then again, I might have standards for what I consider adulthood. You don't magically become an adult when you hit 18 or 21.