In the beginning of the movie, when Monica is 11 years old, she wants to play basketball with Quincy and his friends. Being that she's a girl, the boys tease her as they play. Towards the end of the scene, Monica's winning. Q gets in her face, so she pushes him away. Then Q retaliates with a big push back to her, and knocks her on the ground. When she lifts her head up, you can plainly see that she's bleeding on the right side of her face. The next scene, when Monica's mom is washing off the blood, you'll notice the scar somehow switched to the left side of her face. Then, as the movie fowards to Monica in high school, you'll notice the scar is back on the right side. Not really important, but it still peeves me a little.