So, like I g00gled "Australian Slang", and, while I thot it'd be a good idea to get with the lingo, I found this:
Bushman's hanky : Emitting nasal mucus by placing one index finger on the outside of the nose (thus blocking one nostril) and blowing.
This is going to be a wonderful relationship!
Now: who is still bickering over which one of yez gets to let me (some American tourist, wandering aimlessly with no visible means of support) crash-out on their sofa bed FIRST????