In the scene where Britney confronts Brianna about her weight, when Brianna walks away, Amber says "Wow, brit. why didnt you just rip out her belly ring? That wouldve been less painful."

Then Winnie says "Dont worry, thats exactly how i wouldve handled it." So when Winnie starts saying that, the camera shows Britney. Then when winnie is saying "...wou'ldve handled it" we see her, but shes not even moving her mouth to the right words! It looks like she's just moving her mouth around and up and down.