I am 20. However I often sound a lot older than my actual age, but I look young because of physical problems. I can also act young. I have a sense of humour in which people soon start to realise, it can be a mature sense of humour it can also sometimes be what is seen as an immature sense of humour. I however like that about me. I like that I have those different qualities. I can be serious, and because of experience often sound a lot older. Yet I can also act exactly my age, or I can act slightly younger.
"In every real man a child is hidden that wants to play" Friedrich Nietzsche
I'm 17, but a lot of...people take me for 25-27 years old. I don't think it's advantage anyway... Your friends don't quite understand your thoughts and in a serious intelligent conversation no one get what you're telling them and think that you're "pretending to be older just to stand out or "be interesting" or smth like that...And tell you things like "Shut up, mom (or grandma)!" Not a good feeling. At all.