Grouse
1. excellent; wonderful; terrific.
2. a complaint; e.g. What's his grouse?
"Strewth mum, that roast you made last night for tea was grouse."
"Did you see the new XR8 ute that just drove by?"
"Yeah mate, the're grouse."
"What are you grousin about yah bludger, get back to work"