Personally the idea repulses rather than attracts me, so put me down for the NO and NEVER side.
What I can’t understand is how it can be sanitary? We are told that many cases of e-coli food poisoning come about from fecal matter contaminating food - food preparer doesn’t wash hands properly after using bathroom, whatever - so how can you avoid ingesting fecal bacteria when actually licking up someone’s anus?
I wear disposable gloves and use proper handwashing techniques at my job, and there is a REASON for that. Anything near the anus is in no way sanitary. I know that anything dealing with body fluids, etc. is bound to be not sanitary (and yet we somehow survive anyway) but anything related to fecal matter is WAY off the charts in the unsanitary-meter.
This is what I’m gettin’ at! This is why that chick in the Mike’s Hard Lemonade is so turned on by the 2nd Evil head! She knows he’ll tounge butt and not even worry about a misty brown-eye. Its a done deal!
I recall Cecil wrote a column on the subject at some point - I think it was in The Straight Dope, but I can’t find my copy and a search doesn’t turn up.
Anyhoo - IIRC, he said that regular partners acheive a kind of ‘homeostasis’ with regard to the bacteria inhabiting said region, and you’re generally safe.