Credit: Bravo Photo: Porsha Stewart Models Dresses in Season 5, Episode 14

We knew that Real Housewives of Atlanta newbie, Porsha Stewart, isn't the sharpest tool in the garden shed, but after this week's episode, we're starting to wonder if her airhead act is just that — an act.

Her theory that eating yams helps your chances of conceiving twins was cute, and we laughed off her 265 days a year comment, but her inability to make instant coffee this week really had us shaking our heads. Seriously? What grown-ass Southern belle doesn't know how to serve up a hot cup of coffee? Not only that, but she actually thought the French Vanilla creamer was the coffee.

Does anyone else think that Porsha is playing up the dumb blonde role on purpose?