@Gmane- Newer 'long version' here. I'm told some of this stuff *may* be changing soon, but I haven't gotten the official memo yet (and if so, I need it because I'm writing the new rules).
In addition to those written rules, over time we've learned from the Admin that any visible sideboob or underboob is A/C. Other stuff, like sucking one's own toes, and such, *may* be considered A/C, especially if the celeb in question is a porn actress and not a mainstream one. But here's the one that'll *really* bake your noodle, from the Man himself (see @Graycat's list of perfectly innocent feet pics removed by Admin on Franciely Freduzeski's HOT page). Even beyond the above, sometimes other stuff that looks perfectly (well *nearly*) innocent may be removed as A/C. Why? Best to get that straight from the horse's mouth, Eli Ozer, Owner/Admin:
"Sometimes pictures give the impression of adult content, even though they aren't. When a picture is cropped to show nothing but skin and give the impression that the girl is naked, or if there's a close-up on feet that give away a weird/porn-like pose, I tend to remove it. I try to look at galleries from the advertisers' point of view (as I depend on them to keep the site going, and they have zero tolerance for edgy content). If I enter a gallery and get the feeling I've entered an adult site, I start removing pictures until it looks SFW.
So I'm sorry, but I stand behind my decision to remove those pics.
Also, please try to see things my way and avoid from uploading such pics in the future."