At the MTV Video Music Awards, a pregnant Spears and Federline spoofed their parenting skills in a pre-recorded skit (ending with a faux Sean Preston driving away in a car). But the constant scrutiny they faced also took a toll. "It does affect you to a certain extent. It has to. When you've been poked at and poked at, there's going to come a time when you're going to snap," she told PEOPLE.