Cause it means whatever she says it means

That you can come in her throat, uncovered, which is the meaning I had always ascribed to that acronym until a few weeks ago when a discussion on her led me to also see that UD definition.

In any case, just be sure that you are covered for any non-oral insertions.

If it's CFS, than CID is covered...  
You'd be better served by correctly reading her complete reviews.  Yes, you do need VIP

doesn't mean that you have to partake in it, and just because someone doesn't advertize certain activity doesn't mean that it doesn't happen BCD.

only basic definations like GFE...  leaving the rest to the reviews.  (Because they choose not to check these abreviations)

I do have VIP membership. She is not listed on this site. I did more checking on her own website links for her referrals and a lot are not found and the ones that come up are 1-3 years old. Also she only will make appointments over the phone and not by the hobby website. I think it is best to pass on this one.

Either way, I would be cautious of anyone listing exact acronyms on an ad or website...not too bright.