Aussies do say Gday. At all levels of friendship all levels of formalityand all levels of family familiarity. The first word between two lovers in themorning is... » 

Aussies do say Gday. At all levels of friendship all levels of formalityand all levels of family familiarity. The first word between two lovers in themorning is Gday. The other main greeting would have to be Gday mate. Thereason why this brief greeting has such universal acceptance is simple itsthe flies. The longer your mouth is open the more flies that can crawl in. «