Do you require an enema or something not to get the gentleman to dirty?
Wow.. Really? This is a topic?
No preparation needed. NOBODY goes there.
If he can't handle the sexual chocolate, then he can go find buttsex elsewhere.
I try to keep my system purged as possible everyday. Especially an enema would not hurt the date night for your guy that wants that special pleasure.
You know he is going to want you to suck his cock when he pulls out, of which ever hole he prefers.
Some seem offended by Anal Sex, if he does not ask, I am not hesitant to bring the subject up.
First off, I won't have anal unless I defecate first. I also won't do anal unless I'm in a place where we can shower afterwards. I don't do ass-to-mouth like in porn; that's just gross. I also won't have anal without proper lubrication. Anal, in my opinion, requires preparation; you have to have it at the right place at the right time with the right tools (i.e. lube).