When Gabby looked at her tiny brother, she immediately noticed that he was staring at her plump belly and looking very flustered. It was such an adorable sight that she knew she just had to tease him about it.
"Wow, Cory," Gabby said playfully, "you sure do have a thing for my big belly, don't you!" She gave her belly a few pats, each one jostling her belly fat a little. "I bet you just love the way it jiggles, don't you!" Unable to hide his true feelings, Cory nodded his head rapidly. "Tell you what," Gabby proposed. "If you give my belly the kisses that your little sister refused to, you can watch it jiggle to your little heart's content. Does that sound fun, little bro?"
Cory barely waited for Gabby to finish making her suggestion before walking along her hand up to her belly, leaning in, and kissing it. He then sidestepped a little to kiss another spot on the pudgy belly, and another, and another. While he did this, he listened to the gurgles and rumbles coming from Gabby's belly. The digestive noises only made him want to get up close with the belly as much as possible, and he kept kissing it for about a minute before his big sister pulled him away from it and lifted him up to her face once more.
"Having fun?" Gabby asked teasingly upon seeing Cory's giddy expression. She then plucked him off of her palm and brought him to her lips. For a moment, Cory's blood ran cold as he believed Gabby was going to eat him, sending him to join Katie and Maddie inside her belly. However, he found himself being pressed up against Gabby's pursed lips as she gave him a gigantic kiss, causing his body to heat up again. "Why don't we go to my room and I'll show you just how jiggly my belly can get?" Too flustered to speak, Cory just nodded happily once again, which made Gabby giggle.
Gabby then lowered Cory back down to her belly just before going to her room. The tiny brother couldn't help but notice that even the simple act of walking made his big sister's big belly jiggle with each step she took. He couldn't wait to see what she had in store for him! However, as Gabby put him down on the table next to her bed, leaving him at the perfect height to gaze upon her big, beautiful belly, he heard a particularly loud gurgle coming from said belly.
While Katie and Maddie were continuing to enjoy the taste of each other's boobs, Gabby's movements were making everything slosh around inside her belly. The pancake pile the tiny sisters were on shook and wobbled as both the constant movement and the stomach acid threatened to break it apart. And then, just as Gabby came to a stop, a wave of stomach acid washed over the tiny sisters and submerged what was left of the pancakes. Katie and Maddie's bodies were quickly broken down by the acid and released some bubbles of gas that floated up to the top of Gabby's stomach and disappeared up her throat.
BUUUUURP!
"Oop!" Gabby uttered, putting a hand in front of her mouth just a tad too late. "I think that was our sisters, Cory." She closed her eyes and rubbed her belly with a satisfied smile on her face. She couldn't wait to feel her sisters squirming around within her body fat. Cory, meanwhile, was curious to see how them being turned into sentient body fat would work, though a small part of him had doubts about it and worried that Gabby had killed Katie and Maddie by digesting them.
Fortunately, soon after losing consciousness inside Gabby's stomach, Katie and Maddie found themselves awake and outside of the stomach. Their relief at surviving the digestive ordeal their big sister had put them through quickly turned to horror when they found their movements restricted. They couldn't get away from wherever they were, and there was an incessant gurgling noise behind them. Meanwhile, in front of them, they saw their fascinated brother looking in their direction. To him, the tiny sisters now looked like two humanoid lumps of belly fat, one just to the left of Gabby's belly button and one just to the right.
"Oof!" Maddie grunted. "It's really tight in here." She squirmed around in an attempt to find a somewhat comfortable position, but there just didn't seem to be a way to escape the tightness in Gabby's belly.
"Hey, greedy guts, get me out of here!" Katie demanded, kicking as hard as she could to try to escape. "Big bro, quit staring and tell her to let me out!" Unfortunately, all the tiny sisters' movements did was make Cory blush and Gabby chuckle.
"Ooh, sorry girls," Gabby said in a faux apologetic tone, "but I don't wanna let you out." As the two girls continued to squirm and wriggle, she rubbed her belly where she felt their struggles. "Besides, we can have so much fun with you two in my belly like this!" She then gave her belly a few pats, striking her sisters each time.
"Ow!" Katie and Maddie yelped in response to being slapped by their big sister. They may have been safely absorbed into Gabby's body but it still hurt when her hand hit them like that.
"For example," Gabby continued, "I promised your brother I'd show him how jiggly my belly can get, and now you two are giving me a bit of extra jiggle!" Before either of the shrunken sisters could protest, she had her hands around the bottom of her belly and was using them to bounce and shake her chubby belly. Cory watched eagerly as his big sister's belly fat jiggled and jostled. Katie and Maddie screamed as they were thrown around by the movements of their big sister's big belly. They all heard Gabby giggling above them as she enjoyed playing with her siblings like this.
Soon, the jiggling came to a stop, leaving Katie and Maddie feeling dizzy while Cory and Gabby felt nothing but bliss. The eldest sister started thinking about what else to do with her siblings, knowing that her two sisters were going to be spending the entire day as part of her belly fat.