What a real australian would do to somebody who was insulting them, instead of giving them the american "middle finger". The expression "taste the forks" normally accompanies the tradition two fingers, and can be repeted many times to gain desired effect. It means in true definiton Get fucked
I was walking down the street and some westie hicks drove by and one stuck his head out of the car and screamed "hey blondie youze is ugly". I was then obliged to scream "taste the forks" and erected my two fingers to them. They then got out of there car and beat me for hours, and then shoved my "forks" up my arse and ran off.