DVD Talk review of 'A Boy Named Charlie Brown'
 

In Stuart Galbraith IV's DVD review of A Boy Named Charlie Brown at http://www.dvdtalk.com/reviews/read.php?ID=20892, he says "Twice during the film characters say, 'It's Sidney or the bush!' This reviewer confesses to having absolutely no idea what that means."

This is an Australian saying meaning "all or nothing." It's not "Sidney or the bush," it's "Sydney or the bush," meaning that it's either everything (represented by the "Big Smoke" that is Sydney) or nothing (the vast expanses of the bush, or outback). I'm not sure why it's used in the context of a Peanuts film, but perhaps this was a more universally-known phrase back in '69.

Thanks for clearing that up!

(...and I've gone ahead and noted your comments in my review)