Regarding parents (or any of us, for that matter) who want to make this into grey area:
Ours is not an organization that allows youth to skinny dip or otherwise expose themselves in mixed company. There are groups out there that offer such opportunities. (A friend, who happens to be a lesbian, said such was one of her more formative events.) Anyone interested in letting their kid to be "enlighted" while "eating tainted brownies," can find another youth movement. Most of our chartered organizations would expect us to tow the line. And that means removing pornographic images (be they of friends or strangers) from the possesion of our youth.
That said, it is impossible to shelter our kids from the overwhelming influence of modern media. (Just try stopping in Miami on the way to Seabase.) So, in addition to having the cop/lawer come in and talk about the 11th point of the scout law; I would suggest you ask your charter organization or the youth's religious leaders if they have something to offer in terms of instruction/guidance.
The important thing here is not to throw down a bunch of by-laws, but to introduce youth to various resources that they can go to as they tackle this stuff for the rest of their lives.