This question about South Africa was posted on a South African Tourism Website
and answered by the website owner.

Question: Can you give me some information about Koala Bear racing in South Africa? (USA)

Answer: Aus-tra-lia is that big island in the middle of the Pacific. A-fri-ca is
the big triangle shaped continent south of Europe which does not...

oh forget it. Sure, the Koala Bear racing is every Tuesday night in
Hillbrow. Come naked.

work with a woman who comes from south africa and as i didnt really understand the full impact of the joke.

After she had picked herself up off the floor and dried her knickers she explained that hillbrow is essentially a redlight distict.

Makes more sense now