Technically yes, legally no (I'm 18).
I guess that makes sense. I don't think I'm a narcissist as much anymore as I did when I made this thread (in January), and even then I thought I might be a narcissist, though I wasn't sure. However, I still identify a lot with the description in that link in my first post.
The thing is though, my "grandiose fantasies" are often of things that I would never be able to achieve. I'm able to recognize this though, and never think I'll actually be able to do it (a few years ago, this was not the case). Now I mainly just use the grandiose fantasies as a way to relieve stress, or even give me motivation for things I actually can do (for example, when I was younger, I used to say that I wanted to conquer the world - and actually had serious aspirations to do so eventually - but now I've decided to some day write a book series where the plot is world domination - as in, the heroes are the ones conquering the world; please note that I don't think world domination is a good thing anymore, just that it would make for an interesting book series).
Its a pretty basic trait to make plans, possess hopes and dreams, even fantasise without it amounting to narcissism, its simply a good exercise in imagination and that's alright, in fact its discouraged in myriad ways but I think its alright and dont see how any sort of art or creative production is possible without it. The best cinema and animation and even writing is coming from parts of the world were it still exists and thrives.
I read a book or two by a guy called McCaby (spelling) about leaders and leadership which suggested that all leaders are narcissistic and sought to distinguish between positive and negative narcissism once.