Since I'm very horny with NNN I'm going to tell some because I need to vent. Maybe they're not as hot as the ones already in the thread since where I live (somewhere in Spain) I don't have the possibility to see really fat girls as often as I would like.
At university:
A girl in my major, rather petite, was the typical goth girl (not excessively so). She was thin, but her thighs were a bit thicker above the knee, I mean, she literally had the knees of a thin girl, but her thighs were quite wide all of a sudden. It wasn't very noticeable because of the type of skirts she usually wore (mid-height). At some point she started wearing baggy pants more often, and I started to notice, every time I saw her in the library, that her ass was overflowing more and more from the chair over time, until one day I saw her in tighter pants and she looked downright fat. Her knees were literally buried in fat. From then on the girl exploded, her ass was spilling out of the chair enough to need at least half an extra chair, she started to develop a belly and fat arms. One time she was wearing some pants that were a bit too tight for her and she was sitting on a chair with half her ass showing from above, all squished against the back of the chair. All this was over the course of a year, until she graduated. The only time I saw her after that was at the beginning of the next year. She had a huge belly and pretty fat arms, plus her ass and thighs were even bigger. This time she was wearing a skirt, which barely covered her ass. All the cellulite on her thighs and part of her ass was visible. Plus her face was covered in pimples. It's funny because even a friend of mine who doesn't like fat girls turned his head in surprise to see her like that, since she was a pretty attractive girl before. Her boyfriend, who had been dating her forever, I think said that he liked her fat too. It makes sense that this girl would get this way, since she was hanging out with another girl who had gained 70 lbs in a short time. Seeing her go to college loaded with pizzas to eat with her classmates almost every day was a treat. This other girl also went from being quite attractive to being quite fat, greasy, and covered in pimples.
Another girl at another major the first time I saw her was morbidly obese. I remember that I was with another fat girl that I was dating, and she stopped to look at us, I guess because back then she wouldn't have a boyfriend and she was surprised that a guy was dating a girl like that (it wasn't too common around here then, and it still isn't now). Over time she lost quite a bit of weight, and stopped being obese, but in a matter of less than a year she started gaining weight very very quickly and until now, which has been two years, she hasn't stopped. This coincided with the girl getting a boyfriend, but I don't know if he had any part in making this happen. Honestly, looking at the girl, to date her the guy must be one of us. To describe her a bit, she's pear-shaped, but with a big belly that hangs down, with just her belly she'd be morbidly obese, but she also has a huge ass, which certainly takes up more than one seat and extremely wide thighs, as well as a lot of fat on her neck, arms, back,... She's put on so much weight that she can barely walk. Honestly, every time I've met her, instead of taking the stairs, she uses the elevator, even if it's just to go up one floor, and she doesn't fit through the standard doors used to enter train stations where you have to swipe your ticket, so she uses the one for bicycles. For a while I thought she was shorter than I remembered, but I actually realized that she was so fat now that she looked short in relation to her girth. It doesn't really matter how tall the person sitting next to her is, she's always taller when sitting next to her because of her fat ass. What I mean by this is that by Spanish standards she's extremely fat, and seeing how she's gotten that way since she lost weight and seeing her go up a first floor with an elevator despite being probably barely 20 years old makes me very hard. I would love to go to class with her. I assure you that with how narrow the seats at the university are she takes up more than two of them. It also really turns me on to think about everything she's had to eat to get that big, unfortunately in the EU it's not as easy to gain weight as in the USA, and yet she's reached these levels. I found her on social media and apparently she has been gaining weight unintentionally since she was much younger, with some pauses, exploding now that she is an adult.