Sex. Feminism. BDSM. And some very, very naughty words.
I think if the asshole is very clean, like after a shower, it's not a big deal.
Sugarmag - I actually agree, but that doesn't change the dealbreaker condition. Just ought to make it easier.
A woman had best be clean all over or I'm not going down on her in any regard. It's all quite close together. By the same token, I wouldn't expect (or ask) her to give me oral if my member smelled of pee. It's all about good hygiene.