David was a curious kid, even though he now knew what happens when you eat too much, he still didn't know the effects it would have on his body in the long run, but that was something he was about to find out.
4 weeks had passed since Lewis began to significantly increase the amount of food he ate together with his son, practically all the meals of the day consisted of junk food in large quantities, to the point that both always ended up almost unable to breathe due to the fullness of their bellies.
Hot dogs, pizza, hamburgers, burritos, cakes, sodas and ice cream had become the basis of the diet of the boy and his father, and of course all these fatty and sugary foods began to take effect on the body of both, in the form of soft fat piling up around their midsections.
Lewis noticed his son's gains and was absolutely delighted by them, by now David had a nice flabby belly, was starting to develop moobs and had fuller cheeks, as well as bigger arms and legs, but most importantly, his kid seemed really happy pigging out all time time.
Likewise, David noticed his dad's slightly hairy belly getting bigger and rounder and seeing him rub and play with it so happily after each meal only encouraged him to do the same.
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David was in his underwear watching cartoons and eating ice cream straight from the container, his belly was resting on his lap he was getting kinda full when he heard his dad asking him to come with him to the bathroom.
"It's weigh-in time David" - said Lewis while pointing to the scale in from of him.
"Oka- *buuuuurp*y dad" - answered David while stepping on the scale.
"I'll go first" -said Lewis
Lewis stepped on the scale, numbers began to flash until they stopped at 198 pounds.
"You got heavier daddy!" -said David with a small laugh
"Now it's your turn!" - Said Lewis
Numbers began to shuffle on the appliance, until it finally stopped at 82 pounds.
"Woah buddy, that's quite a gain right there, 22 pounds in just four weeks, almost the same as me!" - said Lewis while patting his son's belly
"Thanks dad! But I have a question" - said David innocently
"What is it David?" - replied Lewis
"Well, I remember that the first few days the number would go up and down after going to the bathroom, but now it's only going up everyday. Why is that? - asked David.
"Okay son, you see, when you overeat delicious food like we do everyday, your body starts storing it in the form of fat, like our bellies" - Said Lewis while jiggling his belly with his both hands
"But that's a good thing! That just means you're enjoying the food and having fun. So I'd say getting fatter is a good thing don't you agree? - continued Lewis
"Yes daddy, It is!" - replied David while replicating the jiggling with his own belly.
"And I have another question" -continued David after briefly playing with his fat.
"Go ahead" - replied Lewis
"I noticed I can eat a bit more every day, like today I was able to finish the whole cake you gave me for breakfast for a few weeks ago I got full too soon. Why I can eat more now?" - Asked the kid
"Imagine your stomach is like a muscle, and when you stuff yourself you're training it, so it can expand a bit more everyday. As a result it gets bigger and you can eat more junk food and so you can get fatter faster!
"Woah! You mean that if I train my stomach I will be able to eat even more food?!" - said the kid excitedly
"Exactly. Do you have any more questions about our weight gain son?" - Asked Lewis
"Hummm... Yes! What happens if you get really really fat?" - David said
"Wanna find out? But it's going to take a lot of time" - Said Lewis, while feeling a boner growing up in his briefs, just from the thought of imagining his son getting even fatter.
David nodded and both of them went to the living room.
Lewis was set on making his son fatter, so he ordered a feast of pizza online and when it finally arrived, even David was surprised at the amount of food in front of him
"4 triple cheese, 2 pepperoni and 2 sausage pizzas, just for both of us" - Said Lewis while putting the pizzas in the coffee table in front of the TV.
"You better start eating kid" - continued after plopping himself on the couch and grabbing the first slice.
Both of them started eating while watching cartoons, it was an easy distraction to keep David mindleslly eating.
Lewis and David finished their first two pizzas, when suddenly Lewis let out a loud burp, soon followed by David.
"Yeah son, you gotta let the gas out to make more space for the food" - Said Lewis.
Another 30 minutes passed and Lewis was finishing his 4th pizza, while David was stuck on the end of his third one.
"Daddy *urp* I'm too full" - Said David while rubbing his distended belly.
"Let me help you buddy" - Said Lewis while he grabbed a two slices of pizza and held them together like a sandwich.
"Open up!" - Said Lewis to David while rubbing his belly.
With the help of his dad David was able to finish everything, or so he thought, when he saw his dad coming back from the kitchen with an ice cream container.
"It's melted so you just have to drink it" - Said Lewis while giving his son more colaries.
David nodded and started chugging the liquid, letting some of it drip into his chest and belly since he was still groggy and dazey from the pizza.
Lewis was so delighted at the sight of his overstuffed son, his dick started to get hard again, so he slipped his right hand into his undewear and started touching himself, while also giving rubs to his son's fat belly and puffy moobs.
"What are you doing? Dad?" - Said David while still chugging ice cream.
"I'm playing with my thingy, it feels nice when we both eat a lot and get fatter, don't you think?" - Said Lewis.
"Can I try?" - Replied back the chubby boy
"Sure, kid go ahead" - Said Lewis while starting to chug an ice cream container for himself
David kept chugging the thick melted ice cream with one hand and started touching himself with the other, effectively wiring food with pleasure in his brain.
Both of them kept going until they finished their ice cream, after a few minutes of silence, Lewis said...