I think that's only happened to me once. It surprised me, but I got over it.
I doubt that your content gets deleted, because it's the most explicit - just as I doubt that the content you've found here is automatically okay. The only reason why it's still here, is because no one has reported it yet.
EP used to be a lot more open, and you could filter anyone under 18 from your page. Now you can hardly post anything, and you can no longer keep kids off your page. A big turn for the worse in my mind!
what do you have to post to get deleted around here?
Someone takes offense, and that's often about it. My bet is that the gross stuff stays because those who would be offended by it don't actually read it. They know better.