I'd like to see more art of girls (other genders welcome) turned inside out.
I so far only saw this in one single image series >>16632 but the theme has so much more potential.
For example in cows its not unheard of for the entire uterus to not only come out but also completely turn inside out at calf birth - vets usually simply stuff it back in (warning graphic http://www.youtube.com/watch?v=mGoEd0ZAQQE
similar things can of course happen to the anus - or likely to any natural or artificial orifice.
Weirdly enough theres an entire subgenre of "rectal prolapse porn videos" on the net, but I have almost never seen this topic show up in gurochan or in any drawn visual art at all.
Maybe I'm just missing the wrong search term on pixiv?