Billagonna (noun): (Navajo) A white person. Probably derogatory.
Interesting story. Today I performed an alveoloplasty on an elderly gentleman. (For those unfamiliar with alveoloplasty it is smoothing sharp or knotty bone down usually so a denture will fit better later). He did not speak any English and the assistants (who are all Navajo) asked him questions for me and translated during the procedure. The procedure went very well and the sutures looked good. He did not complain at all during the procedure.
I had reviewed the health history prior to starting and the only thing of note was a statement in big red letters saying, "NO BILLAGONNA." Being a medically minded person I assumed it was some type of medication that I had not heard of and made a note not to prescribe Billagonna for post-op pain.
When Dr. Bulloch asked me about his health history before we wrote his prescription I showed her the note and said that he must be allergic to Billagonna or something. She laughed and said, "that's what they call white people." She said she was impressed that he made it through the procedure without causing a fuss. So, Anna and I are officially Billagonnas, which we suspected we were all along. :-)