I saw a scene with Sarah Shevon where in the scene she prolapsed (showing tissue coming out) her ass.

Check her review page.  

Ava Devine is now and probably will ALWAYS be available. She lives in Vegas and actually offers half hour rates as well. And she has plenty of reviews here.

I scrolled thru her Twitter photos last night, a few hundred of them anyway. If you want to get a good idea what Ava looks like these days and what she is up to, check out her twitter feed.

Saw Ava in sept.  she is so fun and crazy.  didn't get to see the prolapse anus but I'm sure she will do it for you.