I heard a phrase in a meeting today that I thought was very intriguing - "dollar curtain". It's a variation of the phrase "iron curtain", which was coined by Winston Churchill to define the boundary between the Soviet bloc countries of Eastern Europe and the West European countries.

"Dollar Curtain" means a town that defines the boundary between the rich and riff-raff/have-nots. Mission Viejo was described as a "dollar curtain" town in Orange County.