Both terms have been batted around by young people in the United States and Canada since the early 2000s.

But by the time Mr. Falconer and some friends created a Facebook page in April dedicated to the L.G.s of Sydney and Melbourne, and another for the L.B.s, the term had already landed in the Asian-Australian community, with a mix of amusement and annoyance.

Giffie Ngo, 19, a student at the University of Technology Sydney who is from Bankstown, is reluctant to call herself an L.G. even though she is an administrator of the Facebook page and a regular at the raves that its followers attend. Many of the other young women in the scene also do not quite embrace the title either, even as they concede that they fit its parameters.

The term can be “sort of derogatory,” Ms. Ngo said, like an Asian-Australian parallel to the “guido” and “guidette” personas for Italian-Americans popularized by the television show “Jersey Shore.”

That is part of what Mr. Falconer is trying to change. He said he created a presence on Facebook to mobilize the existing community and reverse the label’s negative connotations.

The page, which reaches more than 30,000 people, invites Sydney and Melbourne residents to submit photos of themselves or friends who fit the aesthetic and consent to be featured. Mr. Falconer and a team of administrators look through about 50 submissions a week, posting memes that poke fun at the subculture’s silliest aspects (like a reverence for Sanctuary’s Long Island ice teas) while also paying tribute to those who exemplify the group’s ethos: “Party hard, work and study hard.”