I've probably posted these before, but why not revisit for a new thread...
1980s, middle class suburbia. There was a secretary in my high school who was immense, like something out of a sideshow. At that time/place even 300 lb people would turn heads and she was by far the fattest woman I'd ever seen IRL, almost definitey the fattest woman in the town and likely beyond. It's an old memory but I'd reckon 5'4" or so, and maybe 500 lbs. She was basically fat all over, though with a giant ledge butt so more pear shaped than not, I guess. That said, I remember being particularly fascinated by her super-plump hands and wrists, and her feet, that bulged out of the tops of her shoes like rising dough. Super-plus sized clothing was especially hard to find back then and her wardrobe was weird and old fashioned. Always a long, pleated dark skirt and loud patterned tops. She wore pantyhose and the rub of her thighs made a huge racket when she waddled through the halls. My friends and I made fun of this but I'm pretty sure I was the only one who was turned on as well by it.
East LA, 10± years ago, biggest ass I've ever seen by proportion, before or since: Very short latina, 40ish, cute, short hair, gray pants, can't remember top, coming out of a restaurant with a few other people. She was fairly plump otherwise but her ass was 2/3 of her body, very round and tightly packed into her pants. She walked leaning forward, as if she'd fall backwards if she didn't. Stopped me in my tracks, watching her shuffle across the sidewalk. There was no one else around and the people with her were watching me so I couldn't stick around to see her squeeze herself into a vehicle, unfortunately.