Check out this interesting post from the Cumtrainer member forum:
Hi Britney. Just joined the site. Best amateur site I’ve been to in a while. When me and my girlfriend have anal sex, she doesn’t do an enema beforehand. About half the time, my cock gets alot of brown stuff on it. My girlfriend then procedes to suck me off. We both love it, and she says she doesn’t mind the taste! Apparently if you go on the forums at adult dvd talk, there is a whole contingent of anal porn fans who like dirty ass to mouth. Not scat mind you, but just dirty anal. I know you do anal without an enema, and sometimes there is a small speck or trace. But what I would like, maybe for just one video only, is to see a more obvious amount of poop on cock. You don’t have to suck it if you don’t want to, although you’ve already proven that you don’t seem to mind. What do you think? My girlfriend would love to see this from you to. She doesn’t want to be the only woman on the planet who sucks ATM cock after all!

My reply:
So you’re looking for more stuff from me like the “Ass-to-Mouth Cleanup” and “Dirty Ass-to-Mouth” from the Movie Archives? I really enjoyed your feedback and I’m glad to hear that there are people out there who “get it”. Sex is not supposed to be squeaky clean. It can be if both partners enjoy that but there’s no steadfast rule about what you must or must not do before you hop in the sack together. The thing with ATM is that some people, here on the site as well as outside, somehow think it’s a waste-product fetish. Which it isn’t. You already said it, none of us is into scat porn. Which I find quite disgusting myself. So I try to walk the (thin) line between regular anal and distasteful anal and label it ass-to-mouth. For me it’s not so much about “visibility” even though I appreciate your point, but more a symbolic act. I don’t do enemas and usually that’s “clean enough” anyway. I basically just want to encourage people to get in touch with themselves and every part/aspect of their body. For example some people freak out if they accidentally pee themselves and need to wash their hands for 15 minutes to feel better, but they’re completely unaware that urine is a sterile fluid. Let me repeat that: sterile. You’re probably gonna get more germs on/into yourself by eating a burger with your fingers than by sitting on a peed-on toilet seat. Cleanliness can become very irrational very quickly.

But anyway, to end this little excursion into compulsive hygiene I just want to say that I have an HD remake of “Revolver Ass to Mouth” planned and will try to shoot it and get it online asap. The idea is to break my own record by going for something like 20+ oral/anal repetitions. All I can promise is that I won’t “clean up” first and whatever happens during the ATM session will be a surprise for you guys as well as myself. Thanks and keep experimenting!