Mary felt her ass explode out of her pants and then she belched very loudly. Her gut stretched out over the waistband of her pants and caused the buttons of her jeans to come flying off. A curly tail poked out from above her butt crack and her ears became floppy and moved to either side of her head. Then she felt a pain in her nose and it became a snout.
"I've OINK got to BURRPPPPPP stop PFFFTTTT this!" She said outloud, each fart or belch causing her to gain more weight. Her skin took on a pinkish hue and she looked like she weighed 400 pounds. But then a new feeling overcame Mary and she felt lazy. She plopped her massive ass on the couch and began watching TV while munching on some potato chips. She scratched her ass and farted loudly. She didn't gain anymore weight from that but suddenly she felt a loud rumble in her stomach.