Don't get the rough end of a pineapple

What would new English speakers in Australia make of the idioms silly as wheel, silly as a chook, silly as a two-bob watch, to have kangaroos in the top paddock, as mad as a gum tree full of galahs, not the full quid and short of a sheet of bark?

Aussie English for Beginners is a series of books published by the National Museum of Australia. The definitions and histories of words and phrases are provided by the Australian National Dictionary Centre, and the cartoons are by David Pope. The first two books in the series focused mainly on single words (such as bludger, dob, ocker, and swag), although there were some idioms (bring a plate, full as a goog, and don't come the raw prawn with me!).

The third book focuses exclusively on idioms. Aussie English for Beginners Book 3 tries to make sense of some of the most common Australian idioms.

For more information:
http://slll.cass.anu.edu.au/centres/andc/publications/aussie-english-beginners