Really? You've never seen a pretty girl play games well before? I suggest that any man who reacts that way reveals more about his own small reference pools than he does about the true nature of the world. Which I suggest is where the Fake Geek Girl really comes from.But...shes.... Gorgeous....brain... Imploding
The true core assumption is that "real" geek girls are ugly. They'd certainly never pull dopey faces, because they're all joyless too. And because a thousand other men with similarly limited experiences all chime in "Yeah!", somehow we get the whole stupid idea of "Fake Geek Girl".
Honestly, the whole thing is based so obviously on blatant aesthetic prejudice derived from very limited personal experience, I have no idea how anyone can defend it.