I love this place. The same thread that once told me, "not everyone wants lesbianism in their porn" is also where I am told that ATM is a popular fetish.
This one is a personal favorite of mine:
https://f95zone.to/threads/atm-adventures-v0-4-snubblr.151132/
Since you are all so open-minded now
Jokes aside, there is no anal sex without some level of poop. The best prepped anal is still... anal. It stinks; you will probably get some on your tip. ATM is basically shit eating and is usally a dominant-power-play. The girl volunteering? thats just shit eating. I dont mind, in fiction. But shit eating is one of my lines-in-the-sand. I am not down with blood either. No red wings for this boy.