We (all of us) have discussed the merits of 16+ vs 18+ many times over. So let's boil it down to the gist of it, which is to say: phun.org is an adult board. You have to be 18+ to sign up so you should expect to see models, performers & celebrities who are 18+ whenever you visit the board. If you are an adult you shouldn't be subjected to anyone under the age of consent (by phun's adult standards, that = 18+) who may entice you into making comments that can get you into trouble with the Phun Staff, and therefore place your membership into jeopardy.
So from this point (April 12, 2015) forward, all members, contributors and content providers will agree that any and all content they post/contribute to/comment on vis-a-vis forum.phun.org will abide by the latest dictate (18+), whether by providing known internet sources or; in those cases that require sound judgement - prior approval from the moderation staff, the general populace, or a combination of both.
We're all in this together, as adults. So let's make phun the best possible destination on the internet for people who love adult forums!