Strange things are afoot in the language centres of our brains. Just the other week, we had the story of the Croatian teenager who woke from a coma unable to speak her native language, but mysteriously fluent in German. Slightly more mundane (but still pretty weird) is Foreign Accent Syndrome, wherein traumas and/or triggers unknown cause the afflicted person to speak their native tongue in a seemingly foreign accent.
So much we don’t understand about that cauliflower of grey meat…