Derived from the
word Digger, used to describe Australian troops who
dug the trenches in WWI, Digger has been cultural slang in
Australia for mate, which is slang for
friend. More recently Digga has made the rounds as the urban tongue licks Australian suburb vernacular, being an excellent substitute in hip hop for a more demeaning rhyming
word as it holds no class representation due to the absence of racial divide when on the frontline. It is to be used only when the receiver and the payer of the term are in Australia, or when an Aussie meets another Aussie in another part of the world. VERY easily misinterpreted, especially in South Central LA or the "ghetto", where you will not have the opportunity to explain its origins.