Not fucked but got close 550lb-ish woman. Met through feabie, so we both knew straight off the bat that I was a feeder and she a feedie. Started
flirting, few weeks later she came to mine and made out / did some foreplay. She offered to crush me and straddle me, and we did some foreplay, but she didn’t want to fuck yet. I was very young and immature at the time (I was 21, she was 33) and things fizzled out because I was too insistent. That night was incredibly hot, the size of and softness of her belly / side belly were incredivble. She told me she used to be 600lb, dropped to 400ish, and was now somewhere in the middle, which made sense. She was so huge but the belly was very wobbly and soft. Was like the best of both worlds. The fat chat was hot, I was just too immature to really deal with her at the time.
Fattest girl i have fucked though was 500lb (I found this out later but at the time she wouldn’t tell me). Known her for years and had chatted on and off, somehow slid into her DMs and convinced her to stay in a hotel in London with me when she came down south to visit a friend. Incredible sex and was fat all over. Very tall, with long legs but the legs were so thick. I remember the shower in the hotel had frosted glass from about the knee down, and I remember seeing her calves were so fat. We dated for a more months, but the distance meant it didn’t work out. Her poor mobility and the fact neither of us drove made things difficult.
Unfortunately she got a gastric bypass and is half her original weight. We’ve talked since and she told me she has lost 18st (250lb-ish) which was ‘half’ what she used to weight, which is why I now know. Shame she lost it, the loose skin must be wild.
Runner up goes to a girl I’ve had a few hook ups with, but she got bigger every time. The first time we did she was around 350lb, with the most recent (around 4 years ago) being around 450lb. Very attracted to each other but we just didn’t gel. She’s now clearly in relationship with a feeder because her pictures on social media show she’s at least 100lb heavier. Lucky chap.
For reference, I’m now 30, and have been active in the FA/feeder community since I was 18 and have exclusively sought out relationships with gigantically fat women. Would love to fuck a 600+ woman but I just don’t think they exist in the UK.