Pfft, just looks like a horrible attempt to humor. You know, there are two kinds of 'fat': being big and being horribly big. I wouldn't get too roused over this crap. However, for definition, the girl isn't normally big; she's disgustingly overweight. No girl that huge would feel comfortable walking around; she would feel the pressure on her heels.
Yah, stupid game... that's all it looks like, so I'll pass.