You're talking about the line:
"Do you lose your way in the middle of the day
Do you see your brother crawling?
And all the while he's calling out for help from you?
Wah hoo wah hoo, wah hoo ..."
This is the part that I see as a commentary of sorts on the troubles of the World. He wants to help...but feels helpless. Hadn't really thought about the "wah hoo"...but note it is "wah hoo" not "woo hoo" (implying something to cheer about).
Nice idea on the Australian themed song thread.
Yeah, Tony I think you're onto something there with the "brother- bit." Your fellow brother i,e society...not the your flesh & blood brother. I think you might of hit the nail on the head with that interpretation. Good stuff!