It depends on who's raising and disciplining them, too. But, I can understand the frustration. We were all there- I mean being a freak boy or mean girl- at some point; though, that could just be because they are going through a phase where they are discovering who they are and gradually filling into their own skin. After that, they (may) accept for who they are and settle. If not, then I'm at a loss. Let them be who they be.