We sing this song regularly at Scout campfires, the "official" scout lyrics are:
I zicka zimba, zimba, zimba
I zicka zimba, zimba, hey
I zicka zimba, zimba, zimba
I zicka zimba, zimba, hey

Hold him down, you Zulu warrior!
Hold him down, you Zulu chief,
Chief chief chief...

from the South African Scout Association site (www.scouting.org.za)

Could somebody please post chords for it? Been looking for them for ages.