A cat with jet-gray fur knocked on the door to the Watterson house. The door opened to a smiling Richard.   "Hi! Ivan, right?"   Ivan walked in the house, watching an orange fish boy and a very bloated pink bunny walk past him. Richard smiled.   "We're gonna be gone for a few hours, and Gumball doesn't wanna come with us. He'll be down in a minute, and all you gotta do is watch him. There's food in the fridge, and-"   "Woah, slow down, mister!"   "Sorry! We're just really in a rush to go! It's a play and we don't wanna be late!"   Richard turned and saw the fish boy struggling to lift the bunny girl with the huge belly.   "I'll be right there!"   Richard turned back to Ivan, who was sitting on the couch arm, checking his phone.   "Hey, I hope you stay safe. Anais told us the last babysitter was abducted while she was napping. I dunno who would do such a thing, but I really don't want that to happen to us again. So lock the doors, close the windows, please just stay safe with my boy. Ok?"   Ivan looked up from his phone and nodded.   "Huh- oh, yeah, sure thing."   "Great," Richard said. "Well, we're off! Have fun!"   "You too, mister."   Richard walked out the door and helped Darwin and Anais into the car before getting in himself and driving off. Ivan waved to them from the window before closing the curtains. His eyes refocused on his phone before he heard Gumball come down the stairs. He quickly shut it off and turned to smile at the blue cat-boy.   "Hi, Gumball! My name's Ivan. How are you?"   "Hello... I'm fine."   Gumball flopped on the couch, sighing.   "So bored..."   "You hungry bored or just bored?"   "Eh, a bit of both."   "I'll just see what you have in the fridge, ok?"   Ivan set his phone on the coffee table and went into the kitchen, unable to see Gumball with his line of sight. Gumball, out of curiosity, grabbed Ivan's phone, noting how it wasn't password protected, and that the phone's photo gallery was open. Gumball peered over his shoulder - Ivan was still in the kitchen, rummaging through the fridge and freezer. He opened the photo gallery.   Inside were hundreds of images of young boys pooping. All of it art, most likely ripped from the Internet. Keeping mind that Ivan could return at any moment, Gumball looked through image after image of young boys being gross, something that made his cock start to harden. Blushing, he turned the phone off and set it down as quietly as he could. Thankfully, Ivan was still in the kitchen, unable to keep his mind off of what he had seen.   I can't believe he shares my fetish. But he's such a creep. I know what to do with him...   Ivan came back in the living room, sitting with Gumball.   "Couldn't find much in the freezer or fridge. Wanna just order pizza?"   Gumball turned and grinned.   "I think I have a better idea."   Gumball then straddled Ivan's crotch, pressing his blue butt against Ivan's dick. Ivan blushed hard, though he didn't seem to like it.   "G- Gumball! What's this all about?"   "You know what this is about... You dirty pedo~"   Gumball pulled his pants down, standing up and turning so his ass was in Ivan's face. Ivan was surprised, but he secretly yearned for something like this to happen. He played into Gumball's hand, pressing his face into that clothed crack.   "Gumball... You have a nice, plump butt..."   "Heh, thanks, Mister Pedo!"   Gumball pressed harder, feeling Ivan's nose through the fabric of his undies. Ivan was breathing Gumball's hole hard.   "Oh Gumball, you have quite a musky butt! If you lived with me, you wouldn't need to shower ever, so you could save this beautiful musky stench for me~"   "Heh, keep telling yourself that."   Gumball's guts gurgled as he sat on Ivan's face. He settled in, rubbing his thick cheeks on the dirty babysitter.   "Enjoy the fun while it lasts, you gross pedo!"   *PHLOOOOOOOORRRRRRRRPPPPPPPT!*   Ivan took a deep breath of the wretched stink Gumball expelled from his asshole. The smell invaded his lungs, and the chemicals from Gumball's blast entered his bloodstream from there. They reached his brain in seconds. Soon, Ivan felt... blissful. His eyes could only see Gumball's big, beautiful ass. His nose could only smell Gumball's rancid fart-stink. He opened his mouth as Gumball ripped another fart, tasting it. It was so sour, yet so pleasant; so beefy, and yet so sweet.   "Gumball... I love your farts..."   Gumball looked back, grinning wide.   "Then get back to work."   *PHLRRRRRRRPPPPTPTPTPTPT!*   Ivan sighed, able to breathe in another messy fart from Gumball's covered ass. Unable to resist, he pulled Gumball's undies down, and stuffed his face deep in the blue cat's buttcrack. He groped the round, furry asscheeks and moaned into the moist asshole before rimming and sucking on it. Gumball responded by sitting righf on Ivan's face and releasing one more fat, loose fart - one that stunk of fresh shit. Ivan's cock poked through his pants, pre staining the front.   Please, Ivan thought, please poop in my mouth!   Then, Gumball's asshole yawned open. Ivan heard the faint crackle of a warm turd as it snaked from Gumball's asshole, coiling up in his mouth. It was so thick and greasy, he could feel each crack and groove in his mouth. It should have been awful... but there was something... tasty about it. Not in a normal sense, but on a much more... instinctual level. Ivan chewed the warm dump slowly, wanting to savor the shit as much as he could. Then, Gumball sat down hard.   "I hope you're enjoying this. Because you're gonna be here for a while."   Ivan would have smiled if he could. His mouth wrapped around the inside of Gumball's hole, he swallowed sections of the dump as lustfully and as hungrily as he could, wanting to signal to Gumball that he wanted more. He could smell his shit so clearly... He could taste the inside of Gumball's sweet ass... He couldn't think clearly at all. All he wanted was more shit to feast on, more farts to breathe in and swallow. If he could, he would notice something... funny about his vision. How he could only see pinkish ridges and grooves. And he would also feel something tight around his neck... But all that didn't matter. He could see another shit deeper inside Gumball's bowels, and he wanted it bad!   *PLOOOORRRRRPPPPBPBPBP!*   The nasty, rank burst of gas sent the shit dropping straight down on Ivan, making him open his mouth wide as the messy turd sat on his lips. He moved his arms up so he could reach it, dealing with the tightness he was experiencing around his waist. He grabbed the thick mess and shoved it in his mouth, swallowing the shit whole like the glutton he was. He grabbed on one of the pink ridges and pulled himself in, feeling something close around his feet.   *PFLRRRRRRRRPPHHHHHHHHRRRRRRBBBBBTTTTT!*   One more massive fart from Gumball sealed Ivan's place in the Watterson house. Now, Ivan was totally committed to servicing Gumball's waste. His haze lifted enough for him to understand where he was... Inside Gumball's ass. He took off his clothes and let them travel out of his new home, laying down while Gumball's guts lightly rumbled and moved. The constant motion of his insides were enough to make Ivan literally cum inside his ass, mediocre ropes of ejaculate spurting from him and lightly painting the spot he came on before it worked its way back outside.   Ivan wasn't finished, however. He crawled deeper into Gumball's colon, with one goal in mind. After s few minutes of crawling forward, he found a thick load of warm, smelly shit, almost as if it were waiting just for him. His mouth watered as he sniffed it up and down, the natural movements of Gumball's insides pushing it towards him. A hot burst of stinky gas blew around him. It was time to eat.   He grabbed the edges of the thick meal and bit into the center, moaning like a bitch as he ate. Another, filthier, wet burst of gas blew around him, pushing the turd right into him; it slammed in his face. He smiled and bit inside the shit, happy as he can be as gas blew around him in a sort of filthy wind storm. Deep inside Gumball's bowels, Ivan had found a new job - and a new home - as he went to work on eating his meal.   --   A few hours later, Gumball had gotten rid of Ivan's phone by wiping the memory and dumping it in the trash. It wasn't very comfortable to pull cotton clothes out of his ass, but it was a fair trade for him. After all, he had a little helper inside him. He pushed and grunted, releasing another huge fart for his former babysitter to enjoy, then patted his now quite distended lower gut.   "Ahh... I dunno how I'm gonna explain all this new weight to mom and dad!"   *FLRRRRRBBBBTTT!*   Gumball giggled, his gassy ass still blasting out smelly farts, almost as if he knew Ivan would like it. Feeling him squirm around inside his guts was enough to harden Gumball's dick, something he took advantage of. Gumball got to jerking off as he kept farting and pushing more turds through his guts, aroused by his own stink. It didn't take long at all for him to cum, cumming a large, thick rope of warm ejaculate on his big belly. He laid back, exhausted at the night's events.   "Mmm... Hope you get used to it down there."   --   The next morning, Gumball woke up, feeling his toilet moving around inside him. He clenched his fists and released a fart that didn't erupt from his tailhole, as his toilet had perfected eating his farts before they came out. He sighed.   Hope you're ready for breakfast, bitch...   He bit his lip and groaned lightly, passing a colossal dump through his gut. Then, it disappeared, section by section. His toilet was being put through his paces, and was passing with flying colors. Content, Gumball got out of bed, seeing his brother Darwin getting ready. Darwin stared at his big brother's big belly.   "Dude, you gotta tell me what that babysitter made you eat before he skipped town."