Primarily to describe a controlling mother-in-law, who treats her husband and family like crap for no apparent reason other than she has no soul, due to living a life full of mooching and exploitation.
The third word in the phrase is the key element - as anyone who is privileged, especially due to the hard work of another person and our current economic state, should never disrespect anyone or depreciate the gift of life outwardly. Being a gold digger is one thing, but to do so in a cu*nty manner is 100X worse.
"That girl has future GDC written all over her."
"I don't mind that she married me for my money, but why is she talking crap to our children? What a GDC..."
Girl 2: OMG I know! Matthew Gray Gubler is such a GDC!
Girl 1: MGG's definitely an total GQMF.
The GDC started in 1988 as a way to promote programming, design, technologies, visual arts, techniques in game industry among others. Also, the event comprises an expo, networking events, awards shows such as the Independent Games Festival and the Game Developers Choice Awards, and a variety of tutorials, lectures, among other activities.
Dude 2: Hell yeah bro! I'm actually going to see some games I'd to test by myself!