(S02E18) - "Oh, that's OK then. As long as you're sorry, we'll let you go ... kidding." - Jane, to the killer

OK, did I miss the part of the episode where they explained what "Aingavite Baa" means? I've been wondering all day what it could mean and even typed the words into one of those web anagram generators. I came up with "Avian Abate Age," "Gab Eat Via An I," "A Agate Via Bin," and many others (including several with the word "vagina" in them, but I doubt that has any meaning).

If I missed it somehow, let me know in the comments so I can look goofy.