I've heard 'em, but don't understand and have never spoken them.
Sounded vaguely Hebrew to me (I think there was a "Rabboni" in there, or something like it).
I wouldn't state that all cases are necessarily kosher, though.
It always makes me laugh when people discount something because it's outwith their personal experience. So much for balancing an open mind with skepticism.
(Sorry, just a little personal musing).