Meredith here was out partying with friends and left the group to visit the ladies room. As much as Meredith had to drink you would think one of her friends would have accompanied her. But instead she embarked on this journey on her own. As a result she never quite made it inside the stall but fell a little short (literally). She tried to phone a friend but everyone besides Meredith left their phones in the car. So the only person available to help her was the stranger who took the picture.