So let me remind all serious people out there, the problem with the OP is not he is a hard-worker but that he boasts of being in the 1% and implies that those that aren't are lazy. He is a moral wazzle. And pretty typical of the self-proclaimed wealth creator class.
I don't think the kid was trying to say he/she was part of the 1%. The way I read it was that he/she was not part of the "99%".
Maybe so, but is that something worth boasting about? Something worth developing a sense of superiority on?
I don't think that's a charitable interpretation of the sign. I would interpret it as saying "I'm not part of the OWS movement and do not share their ideals" which here is short-handed as saying "I'm not the 99%"
You're assuming that the person is using 99% the way the OWS movement does (i.e. the bottom 99% of the wealth distribution). Given the context I doubt that.
I'm not assuming anything except from the tone which his message exudes excludes him from any other personal social rating of mine other than "clearly a douche". After all, why go to all this effort to make such a laboured and uninteresting point?
As for growing up, I tried that once and I thought it was overrated.