I believe Meghan was trying to be "hip" by tossing off some outdated Bravo lingo, here. I too, am a Real Housewives aficionado, so I'll call her out when she steals a quote or phrase from one of the wives in her lame attempts to make a quip. On the very first season of RHOBH, ex-housewife Taylor Armstrong, threatened to take another one of the ladies outside and go all Oklahoma on her ass. It is not an expression I have really heard used again since today. I have no doubt this line is what Meg was trying to emulate.