Wrong Camera angle: The camera is David's eyes point of view, but David's wife is shown to be the same height, despite clearly being a foot shorter than him when both are onscreen (in the mirror, and a cellphone video). She is even looking straight into the camera while talking to David, as if he's that short. Later on, when David is getting drunk with his friend, the friend looks to be towering over him. This is likely because they strapped the camera onto David's chest to film the movie, so his "head" was at his chest's level.