Check out this little internet calculator that determines what your "real age" is and how long you are supposed to live.
According to Poodwaddle, my real age is 18 and I am going to live to be 105. The funny thing is that most days, I feel about 17 or 18. Thankfully, I've learned a few things along the way, but I have never gotten it through my head that I am a grown woman now. Not that I run around acting as if I am 17 or 18 (or at least I hope I don't), but I really cannot wrap my head around the number that is my chronological age.