At first, it was barely noticeable - Jess just seemed a tiny but thicker, but before too long, it was obvious that Jess's form was swelling with fat.
Well, noticeable to Mary and Cat. Jess was somehow completely oblivious to what was happening.
"Oh, Man, this popcorn is great," Jess moaned enthusiastically as she shoveled handfuls into her mouth. The more she ate, the more kernels spread around her. "Where'd you get it?"
"Grocery store," Mary answered, trying to contain her giggles at watching Jess get steadily fatter. "It's SmartFood."
That fact made Cat giggle a bit, amused that a "diet" snack was making Jess fat.
"Oh! It's so good!" a d then Jess surprised both of them by planting her face into the bowl and munching straight from it.