“Oh my god, look at you!” I exclaimed looking at her breasts. Courtney took it as an incentive to proudly stick out her chest, straining her button down blouse to its limit. The buttons creaked under the huge pressure from her jiggly mounds, but held. I’ve always been pretty proud of my looks, but comparing my meager B cups with the watermelons attached to my little sister’s chest made me self-conscious.

“Where are Amber and Cheryl?” I asked Courtney in order to distract my mind from feelings of inadequacy, even though I already knew what the answer to my question will be.

“Oh, they’re stuffing their faces in the living room. As always.”

Mom emerged from the kitchen bearing a plate with two of her infamous hamburgers. Don’t get me wrong, they were delicious, but they were so big and filled with so many calories, it would make your eyes pop out of your head. I’ve never been able to finish even one of those things.

“Here you go honey. I’m sorry I couldn’t save more for you. Those two,” she motioned her head towards the living room. “They’re like acid! I even had to send your dad to get more food!”

“Thank you. It looks heavenly.”

Courtney stared at my burgers with her mouth watering.

“Here.” I offered. “Take one. There’s no way I would eat both of them.” Courtney didn’t need any convincing and immediately grabbed one burger off of my plate and started to cram it into her mouth like if she was afraid that someone would take it from her. Remembering our two older sisters were in the next room, it made some sense actually. I took a bite of my burger, already imagining how much time I will have to spend in gym to make up for it.

“Oh look, it’s Twiggy.” Said Amber, my eldest sister, while she was pointing her fat arm in my direction.

“Hey Twiggy.” Cheryl mumbled with her mouth full and with burgers in each hand. She didn’t even bother turning her head to face me, too occupied with stuffing hamburgers into her greedy mouth.

It was quite shocking display even though I was fully aware of what I’ll find. Amber and Cheryl were sitting on a three-seated couch that was crying for mercy, with they’re huge asses and thunder thighs pressing against each other. Just three months ago the 29 years old Amber was significantly larger than Cheryl, but now it seemed that the 27 years old glutton managed to close the gap between them. And by the look of how was Cheryl eating, it wouldn’t take long before she was the fattest in the family.

That was another thing about the crazy family gene or whatever it was. Once you reached a certain point you simply stopped gaining. Amber seemed to have reached this point already, while Cheryl was still piling pounds upon pounds like there was no tomorrow.

Amber and Cheryl seemed to be about the same size, there were big differences however between how their respective weights were distributed. While they both inherited mom’s large booty, the rest of Amber’s weight was quite evenly spread across her more than 500 pound body. Cheryl on the other hand carried most of her weight in her truly gargantuan gut.

“Can’t you move your fat ass a little?” Cheryl turned to Amber. “You’re taking too much space!”

“You’re taking just as much space as I do! It’s this stupid couch. It’s way too small!” Amber retorted.

“You guys realize that three people are supposed to fit on it comfortably, right?” I remarked, hiding my disgust.

“Shut up, Twiggy!” Amber and Cheryl shouted in unison.

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