When Brooke, Haley, and Peyton are in the car driving, Brooke throws her pom poms out of the driver side window but when the camera cuts to the outside of the car it shows them going out of the passenger window. When the camera cuts back to inside the car it still looks as if Brooke has throwing them out of the driver side window.
Brooke throws her pompoms out the window. Later, when Haley and Peyton return to the car, Brooke is sleeping in the back seat, and she's lying on her pompoms.