Hi Tim,I have no idea what the Rugby teams sing... and I don't ever remember Monty Phyton singing it, but here are the words:
I ka-ma zim-ba zim-ba za-yo, I ka-ma zim-ba zim-ba zie
repeat
See him there the Zulu warrior, See him there the Zulu chief, chief, chief.
That's it! Sing in rounds, but that's the whole song! The book doesn't even have any chords or I give ya' that too!