My mother ran into an old friend in the checkout line the other day. The woman had relatives visiting with her, and they alternated between chatting in English with my mother, and in Navajo with each other.
When they left, the cashier wondered out loud what dialect of Spanish that was.
"I think they were speaking Navajo," my mother replied.
(Mom again) "They are Native American."
(Cashier) "Oh! They have their own language?"
Thud, thud, thud....(this, if you can't tell, would be my head hitting the nearest wall.)