Like this post?
It can be difficult to tell parents things you know they don't understand, and even harder for them to listen until you're done explaining. So it's up to you to enlighten them...
Got time for an off school book report?
Gather some facts, incorporate your views and beliefs and write it on paper, not too long, maybe a page or so. This way they'll be told without interrupting you or giving their two cents before you finish.
Maybe, instead of telling them you're a nudist, just write general knowledge about it,including some highlighted facts, include your general ideas without out right admiting it and have discussion when they're in a good mood. You can say you're flirting with the idea of it.
This way you'll get a definate respose on their views and if they over react, then you can stay in the closet to avoid any parental units coming down on you, until old enough when they can't stop you.
Just a thought...