(Thanks to Phoebe for the suggestion)
When life in the parish gets thicker and thicker,
You may have a call for a substitute vicar.
And what a delight if he comes from afar!
I’m the substitute vicar from Zanzibar!
Chorus: He’s the substitute vicar from Zanzibar.
I’m sure you don’t mind if I preach in Swahili.
Are you paying attention? Oh, no, not really!
I saw you nodding, whoever you are–
I’m the substitute vicar from Zanzibar!
Chorus
(Additional verses will suggest themselves to the alert reader.)