I post photos at a number of photo-sites and art-sites like DeviantArt. Most sites have some kind of 18+ designation, for pictures that contain 'mature' content. Like women's nipples.
What is it that is so nasty about a woman's nipples? Men's nipples are fine. Dog's nipples are fine. Cows' nipples are fine. But women's nipples? Horrifying. The entire United States recoiled in terror at the sight of Janet Jackson's nipple on the superbowl halftime show last year. But if it had been Justin Timberlake's nipple, everyone would have thought he was just taking his shirt off because it was hot.
So, this image mixes things up a bit. It's NOT 'mature content' because the nipples in the picture are a man's. Specifically, they're the models' husband's. With the magic of photoshop I replaced her (very nice!) nipples with his (well, they look about the same, really, kind of, um, nipply!) hairy manly nipples. The photoshopped-on male nipples actually cover about as much as a nano-bikini would. I was careful to leave some of the hair around them, because if I had just done the nipple-swap nobody would have noticed it. Why? Because male nipples (which are OK for everyone to see) look almost EXACTLY like female nipples (which can cause your eyeballs to explode if you look at them when you're under the age of 18)!!
Now, if you all are VERY nice to me, I won't explore the obvious follow-on topic: why a dog's anus is not obscene, but...
(PS - The model [link]
would like me to emphasize that her nipples are NOT furry.)