Continuity mistake: When Kirsten Bell tells to a Dorito-breath Melissa McCarthy "Michelle, you can't sleep in my bed, I don't want you in here", Michelle's hand is in a completely different position between shots. (00:23:50)
Continuity mistake: When Michelle gets catapulted onto the wall and begins wailing, her right arm is straight, semi-parallel to her shoulders. Next shot and it is bent, hand up to the level of her face. (00:22:55)