It was a late summer afternoon in the town of Elmore; the hometown of a young blue cat named Gumball Watterson. At the moment, he was in the living room, waiting for a knock at the door from someone he was expecting.  “Geez, where IS she? She’s over half an hour late...” Gumball paced back and forth in the living room for a few good minutes, before he finally heard the doorbell ring. “Oop, she’s here! Okay, Gumball...stay smooth, suave...and sweet.” The young blue cat said to himself. He took a few deep breaths before opening the front door.

“Hi, Penny!” Gumball smiled at a young, female glowing shapeshifter, who happened to be one of Gumball’s biggest love interests. "Good evening, Gumball! Thanks for inviting me over!" Penny smiled and looked at the teenage cat as she walked into the house.  “It’s not how I am; it’s how YOU are, m’lady.” Penny smiled as Gumball closed the front door. Earlier, Gumball’s family had gone to visit their grandma, and Gumball volunteered to house-sit for them in their absence. This job gave Gumball the perfect opportunity to possibly get closer to Penny.

“So, you got your overnight bag? Want me to take it for you?” Gumball offered. "Oh yes, I did bring my bag with me. Just some toiletries and stuff." Penny replied as she gave her bag to Gumball, smiling with a light blush at how polite he was. “You know, I’m really glad you agreed to help me house-sit for the weekend. If I were to be alone the whole time, I’d have gone stir-crazy!” Gumball chuckled as he held Penny’s overnight bag in his arms. "Well, I would assume so; cats can get restless on their own." She smiles and giggles a bit at her remark. “Hey. I resent that.” Gumball joked.

The two then walked upstairs to Gumball’s bedroom. The blue cat ran ahead of Penny up the stairs, and opened his bedroom door courteously to gesture Penny inside. “Ladies first.” "Oh, thank you. Oh, gosh..." As she walked into Gumball’s room, she saw it was quite a mess. Gumball exclaimed, “Dangit...I forgot to tidy up... I’m sorry! I feel so STUPID!” He smacked his head in embarrassment as Penny put down her night bag.

"Don't worry, sometimes my room is a mess when I have guests over, no need to apologize." Penny smiled and patted Gumball on the shoulder.  He then said, “Thanks. Say, let’s clean up together. Just as long as you...don’t look under my bed, okay?” Gumball giggled nervously. "Oh, okay?" Penny sounded a bit confused, but shrugged it off as the two started to clean.

 After about half an hour of cleaning up Gumball’s room, it was almost spick-and-span, say for a few toys on the floor. “Hey, Penny. Could you come hand me a duster?” Gumball pointed to the corner as he closed his closet door.  "Sure. Huh, are those your childhood toys?" Penny then gets Gumball a small cotton duster, but just as she grabs it, she walks towards Gumball...and stepped on a toy truck! She trips and falls down, and with a loud crash, hits the floor. “OOF!” Gumball turned around quickly to see Penny had tripped and fell.  “ACK! Penny! Are you okay?!” 

"Urk, I'm okay..." He rushes over to Penny to pick her up from off the floor.  “Are you hurt? Want me to get first aid? You need some ibuprofen?!” Gumball panicked. "I'm okay, Gumball, don't worry. But...I do have a question." Penny got up and dusted herself off. “Yes, my injured maiden?” Gumball asked politely.  "I wasn't snooping but, I saw something under your bed.”

Gumball froze. His eyes widened, and he began to sweat bullets as he stuttered, “W-what?? There’s n-nothing under my bed! Absolutely nothing!!” Gumball panicked a bit as he smiled nervously. "Are you sure? I saw a plastic package of some kind." Penny asked in a suspicious tone. “P-package??...Um..I don’t..w-what’s plastic??” Gumball began to blush a bright red... Penny then looked even more suspicious than before. 

"Gumball? Are you okay? Is there something you want to talk about? Are you hiding something? What is it? I won't be mad." Penny has seen Gumball act like this before; she knew he was hiding something from her. Gumball then angrily blurted out,  “I TOLD YOU, I’M NOT HIDING DIAPE--” Gumball quickly covered his mouth as he realized what just slipped out!  “OHNOOHNOOHNOOOO!!!” Gumball thought to himself as Penny walked over to his bed, and knelt down to look underneath it.

"Huh? Incontinence briefs? Gumball, are you okay?" Penny actually starts to look worried for Gumball more than suspicious, she looks over to him and he was drenched with his sweat. “They’renotmineI’mjustholdingthemforafriend!” Gumball rapidly exclaimed. "Gumball, tell me the truth, please, I won't be mad, I'm just worried about you? Are you okay?" Penny asked. Gumball knew there was no point in lying anymore; he was pretty much exposed at this point.

“Penny, PLEASE don’t tell anyone! PLE-HE-HE-HEASE, I BEG YOU!” Gumball began to sob hysterically. "Gumball, please calm down, sit down with me. Just take your time; tell me what's wrong." Penny pats the spot on Gumball's bed next to her, she wants him to sit down. Gumball’s tears were drenching his clothes as he sobbed. “Penny...I like to wear diapers when no one’s around, okay?! I mean, they’re so soft and comfy, and, I really was hoping no one would EVER find out!” Gumball sobbed even harder as Penny walked over to Gumball to hug him. She softly hugs him and wipes his tears.

"There, there, Gumball. Stop crying, it's okay! I’m not angry!" Gumball sniffled, “You mean...you don’t think I’m a disgusting freak??” Penny replied, "No, not at all! And...I honestly think it's kinda cute." Penny smiles and wipes the rest of his tears away, Gumball immediately stops crying, and almost instantly gets a confused look on his face afterwards. “Cute? W-what do you mean by that?” "Well to be honest, I like cute things, and I personally think it's cute how you like wearing diapers like a kitten. I haven’t got a problem with that at all!” Penny smiles warmly.

“Really?!” Gumball’s eyes lit up as he heard Penny say this. In all honesty, he never would’ve thought that his love interest would actually be interested in his fetish, let alone call it cute. Gumball fluttered with excitement as he immediately hugged Penny tight. “Thanks SO much.” “Um...You’re welcome, Gumball.” Penny said.

Gumball then noticed that his diaper package was now on top of his bed. “Um...Penny?...” Gumball shyly asked as he broke from the hug.  "Yes Gumball, what is it?" she smiled and sat down on Gumball’s bedside. He was hesitant to ask his biggest love interest to do what he was about to ask, but since it seemed she was okay with it, Gumball asked. “Um...is it okay if you...change me into a diaper? I’ve done it myself countless times, but I’ve never had someone else do it for me since I was a baby...”

Penny smiled a bit as she said,  "Hmmm, sure! I think  it'll give me time to practice more on changing you in the future." Penny giggled as she tore open the diaper package, and pulled out two diapers. The diapers were nothing fancy; simple plain white with light green tapes and waistband.  Penny was impressed with how puffy and thick the padding of the diaper was; she’d never seen them like that before. She squeezed the puffy diaper, and it crinkled loudly. "Oh, wow! This thing is so thick; I didn't know they made diapers this big either." She looked at the diaper in amazement.

“Yeah. You’d be surprised. Okay...you..want me to...” Gumball blushed and waited for a few seconds before finishing his question... “...get naked?” Penny giggled as she said, "I'll do it silly; It’ll save you the trouble. C’mon, let's get you out of these stuffy clothes."

Gumball’s mind raced as Penny took off the blue cat’s sweater, and then unbuttoned his jeans. ”Oh, my gosh!! She’s actually gonna see my privates!! I don’t know if I should stop her, or let her keep going!!”  Penny whistled a little tune as she then pulled down Gumball’s jeans. Gumball remained frozen in place, sweating bullets as Penny set his pants to the side. "Okay time for your undies.." Penny grabbed the waistband of Gumball’s tighty-whities, before he shouted out,  “W-wait!!” "Huh?" Penny looked up at Gumball, confused.

“Are you sure you wanna see my...you know...” Gumball was super scared to let Penny see his genitals, but before Gumball could get any more words out, Penny shushed him as she placed her finger over the blue cat’s mouth. "Shhh...It’s okay, Gummypuss. You can show me everything." Gumball shivers as Penny slowly pulled down his tighty-whities…

Now Gumball’s limp cock and balls were now in full view of Penny’s face. ”Oh, my gosh!! Penny’s looking at my penis!! This is nuts!!” Gumball thought to himself as Penny stared at his privates with full satisfaction. "Oh my! Gummy, you look nice!” She deliciously complimented as Gumball started to calm down. “Well you know what, you won't need these anymore.” She threw his undies in the trash bin as the blue cat breathed a long sigh of relief after a few moments of tense silence.  “Well...I guess that wasn’t as bad as I thought!” "Yup, and as long as I'm here, no more undies, no more bathroom, you've got your diapers." Penny smiled as she playfully smacked his butt. Gumball flinched at this feeling.

“Okay, okay, I get it! Now just put the diaper on me before I…” Gumball paused. “Oh, never mind.” He then got onto his bed, and laid down on his back. Penny giggles, “That’s a good kitten.” Penny unfolded the diaper as Gumball lifted his legs. Penny then tucked the open diaper under Gumball’s rump, and he slowly descended his behind onto the inner padding. A soft crinkle entered Gumball’s ears as the soft sensation touched his butt, and upon this, he felt a soft moan escape his mouth… “Mmmmm…” Penny’s face lit up upon hearing the soft noise. "Oh my, what was that?" “Nothing!! Just tape me up, okay?!” Gumball pouted as he tried to cover up his earlier action.  She smiles as she pulls the diaper over your crotch, and tapes it up to a snug fit around Gumball’s crotch before pulling your tail through the tailhole on the other side. “And we are done!”

As soon as Penny finishes up with Gumball’s diaper, she gives it a little pat. Gumball then sat up, and got off his bed, standing up in front of Penny, clad in his new diaper. “Well...how do I look?”  Gumball shyly asked her. "Oh my goodness! Gumball, you look adorable!" She smiles and looks at you as she also stares at Gumball’s diaper. The diaper was so thick and puffy, it spread the blue cat’s legs apart about a foot on the floor!

“Thanks. Say, would you mind putting one on, too? I wanna see you cute YOU look, m’lady.” Gumball confidently asked as he booped Penny on her nose. "Oh my…Well… I haven't put one on myself before, so, can you help me with it?" She blushes and smiles warmly at her new padded-up partner. “Whatever you say. Anything for my fair maiden in need.” Gumball waddled over to the diaper package on his bed, and pulled out another diaper out for Penny. The thickness of the diaper Gumball was wearing made it a bit tough to walk; not that he was running a marathon in them.

“Okay...let's do this.” Penny then laid down on her back on Gumball’s bed spreading her legs out at Gumball. "Like this, Gumball?" Gumball stared at Penny for a good long while. He gazed into Penny’s womanhood; her folds looked very inviting. “Yesss...just like that.” Gumball crooned as Penny giggled. Gumball opened up the new diaper, and slid it under Penny’s rump. Upon sitting on the soft inner padding, Penny exclaimed, "Oh my goodness, this thing is soft!"
She blushed and looked down at how soft and cushy the diaper was. “I know, right?! It’s like wearing a soft pillow!” Gumball chuckled as he folded up Penny’s diaper over her womanhood, and then taped her up snuggly. “There we go, all done!” Gumball gazed proudly upon his diapering job as Penny blushed. "Oh my gosh you're right, it's like a pillow for my butt!" The softness of the diaper was overwhelming to Penny; she had never felt anything like it before in her life.

Penny and Gumball then got off the bed, and she stood in front of Gumball, facing him. The two’s eyes locked in romance, as stupid-looking wide grins spread across their faces. “Wow....you look good, Pens!” Gumball said as he stared at his maiden’s padding.  "Same with you, Gummy, you look good in that cloud." Penny complimented back warmly. The two then immediately hug each other; their diapered fronts touching each other’s. Gumball was so happy that the love of his life would not only be accepting his fetish, but also joining in on it with him.

Just then, Gumball’s and Penny’s eyes widen at the same time. They break from the hug...and Gumball saw that his diaper was starting to get tented by an erection! “WHAT THE WHAT?!” Gumball exclaimed. "Oh gosh, Gumball, y-you're hard?" Penny blushed a bit and looked down at Gumball’s diaper tent. “Oh, yeah. I guess I forgot to tell you that I’m also aroused by diapers. Must’ve slipped my mind. My bad!” Gumball laughed a bit at his mistake.

Gumball then said with enthusiasm,  “Hey, Penny! I’ve got an idea!” Penny responded, “Yes? What kind of idea?” Gumball grinned. “I know this might sound a bit crazy and all, but....since I’m all hard right now, how about we have a diaper masturbation contest?” Penny’s face turned to an expression of shock as she blushed. “W-well...I dunno, Gummy…” Penny sounded a bit reluctant to Gumball’s suggestion. He then said, “How’s this: the winner of this contest gets to finish off the loser. Whadaya say, m’lady?” Gumball frantically thought to himself, “Please say yes, please say yes, PLEASE SAY YES!...” A nervous, toothy grin spread across his face, hoping for an answer… “Well...Alright! You’ve got yourself a deal, my little Gummypuss.” Penny smirks and looks at you seductively. Gumball threw his fist in the air in victory. “YES!!! Okay, let’s get in a good position...kneel down on the floor facing me, okay?” Gumball knelt down beside his bed, and Penny did the same. The horny, young cat slipped his hand into his diaper waistband, and grabbed his erect cock under his diaper. Gumball shuddered in pleasure as he stared at Penny.
”Ooohhh, man!! I can’t believe I’m gonna actually jack it in front of the love of my life!! I’m so happy!!” Gumball’s mind raced as Penny pressed her hand over her padding. "Okay... Oh, my… this is something I've never felt before..." She blushed a bright red and looked at Gumball with passion in her eyes.

 “Okay, you ready?” Gumball grinned passionately as he began to get ready to masturbate. Penny shivered in her tone as she responded, "Mmmm, yes, I'm ready. Hoo boy…” She blushed as she got ready to rub her diaper. 
Gumball then signaled for the contest to start...“Three, two, one, GO!” Gumball immediately started to stroke himself in his diaper as fast as he can, while Penny began to rub her diaper front in small circles.  "Mmmm, oh my... it's so soft and puffy; I love it..." She moaned softly as she rubs quickly on her padded folds. 

“Man...you’re SO gonna lose!...MMPH...” Gumball grunted in arousal as he stroked his penis under his soft padding. Meanwhile, his eyes were gazed upon Penny’s masturbating, and he was getting really horny over watching his love interest do so. The same feeling was upon Penny, as well. "Mmmmff, oooh!....Gummy...my pussy’s getting wet..." She blushed and moaned softly as she gazed upon Gumball’s padded fapping. The two’s diapers crinkled loudly as they continued to rub, speeding up a bit.  “Mmm...Penny...you’re sooo hot in your...mmmph!” Gumball grunted as he felt his crotch tingle immensely in his soft, cushy padding.  "Nnnnff, you're very hot as well! Mmmm!..." Penny bit her lower lip as hearts flashed in her eyes. Her body began to glow brightly as she gazed upon Gumball’s tented diaper, which was already starting to leak precum into the padding. “Oh, no! I gotta catch up! Gumball’s gonna win...but...oh, man! He’s so sexy!” Penny thought you herself as she pressed into her diaper, stimulating her wet clitoris inside her diaper. As much as she tried to focus on her pleasureful stimulating of her pussy, she just could not. She was too focused on how cute and adorable Gumball looked jacking off in a diaper. The loud crinkles and soft moaning and grunting of the two teenage hornballs filled the room.

Penny blushed and moaned to herself as she continued to stare at Gumball and rub her diaper a bit faster, now pressing deep into her padding, desperate to win the contest. “Mmmmmph!...Oh, Gumball!...” Just as Penny moaned out, she heard Gumball pant loudly, “Penny!...I’m getting close! Looks like you’re gonna...” Penny sped up her rubbing, desperate to not lose. "Nnnnnff, no! I-I can do it!.." She blushed as she tried her best to rub as quick as she possibly could! Gumball yelled out... “Y-you’re gonna...”

Gumball moaned loudly as he stroked as fast as he could, reaching the point of no return. “LOOOOSE!!....” Gumball’s euphoric yell drowned out the diaper’s crinkles as he spooged hard into his diaper. “AH!....AH!...AH!...” Penny blushed as she stared at Gumball’s flooding diaper. She thought to herself as she bit her lower lip, with love in her eyes… "O-Oh my gosh, Gumball's cumming in his diaper! He's SO hot!" She blushed a deep red as she slowed her rubbing down;the front of Gumball’s diaper got a wet spot emerging through the padding as he moaned loudly. Pulses of pleasure rocked the young blue cat’s body as his cock twitched, spurting the last of his load into the soft padding.

Penny’s diaper rubbing ceased as she saw Gumball finish up his diapergasm. “Hah...Hah...hoo, boy...” Gumball panted heavily, finally spent from his climax. After a few moments, Penny piped up,  "God, Gumball. You're so hot cumming in your diaper like that..." Penny blushes as she took her hand off her diaper to look at the spent blue cat. Gumball pulled his hand out of his diaper, and it’s all wet with his sperm. “Wow...looks like I win, m’lady. You lost fair and square. Haha!” Gumball laughed as he wiped the sperm off his palm onto the outside of his diaper. “I guess I was more pent up than I thought. Speaking of which, why didn’t you climax? I was watching you the whole time; you weren’t even trying from the looks of it. Uh, no offence.” Gumball commented.

 "Sorry, Gumball. I was...just too distracted on how hot you looked masturbating in your puffy diaper.
She blushed and giggled a bit at her embarrassment.  Gumball licked his lips as he got off his knees and stood up, sitting down back on his bed afterwards.  “Well, you know the penalty for losing this contest, right? Come on up here, loser! Heh, heh!” Gumball grinned sinisterly as he gestured Penny over to his bed. She smiled and sat beside him on the bed. “Come into my arms. I’ll do all the work.” Penny laid down on Gumball’s lap, and smiled warmly into Gumball’s devious eyes.

“Atta girl. Let ol’ Gummypuss get you off.” Gumball slowly reached into Penny’s diaper, and slid his hand down onto  the shapeshifter’s wet clitoris. He then started to rub his fingers on her folds, and Penny’s mind raced. “Oh, gosh!! Gumball’s rubbing me off!! It feels heavenly!!” Hearts flashed in Penny’s eyes and moaned softly as Gumball’s fingers entered her pussy’s cavity. "Ooooh, Gumball! Oooooh!!" She moaned loudly as she felt a balloon of pressure building up in her lower body. "Rub me, rub me quickly!..." Gumball’s fingers entered in and out of her pussy in her diaper, and her feminine juices got absorbed by the thick inner padding, also slicking up Gumball’s fingers.  “Wow...you’re so wet under there. But hey, that’s what your diaper is for! Riiiiight??” Gumball crooned as he fingered Penny faster.  "Oh, yes! Right there! Finger me harder!" She wailed out in pleasure as her body twitched violently. 

“Yes! YESSSS! Make your flower squirt hard in your diaper! I wanna see you cum! Cum...into your soft, puffy diaper!” Gumball evilly said as he fingered Penny faster in her padding. He knew Penny was going to climax any moment. With one final movement, Gumball thrust his three fingers deep into Penny’s pulsing pussy as she reached orgasm. "I love my diapers! I love them so...Oh god! AUUUGH!!" She moaned loudly as she squirted hard, her vaginal juices getting soaked up by her puffy diaper. Gumball’s eyes widened as he felt Penny’s folds pulse over his fingers and get all wet. He felt complete satisfaction with getting the love of his life off, and he had just done so with all his passion. “Yes, let it alll out, m’lady.” Gumball smirked as Penny moaned out repeatedly in euphoria. And just as quickly Penny’s climax started, it had come to a close. 

"Mmmmmm, soooo good..." She blushes as she leaked the last of her juices all over his hand, her legs shaking a bit in her afterglow.  "Guuuh...My legs feel like jelly..." Gumball smirked with satisfaction, “Well, that’s the price you pay for losing a contest to ol’ Gummypuss.” Gumball then took his hand out of Penny’s diaper, once again all wet with sex juices. He lapped it up, and once his hand was free of any fluids, he let Penny off of his lap, and they both laid down on Gumball’s bed, side-by-side. The two smiled warmly as they began to cuddle in the glorious afterglow. Both of their diapers had visible wet spots, and they both embraced the feeling of their wetness with full satisfaction. “Gumball...that was so incredible. We should totally do this again sometime.” Penny winked.

“Yeah...Hey, Pens?” Gumball asked as he spooned Penny. "What is it, my little Gummypuss?" She smiled as they snuggled closely together. “Like I said earlier, please don’t tell anyone about this, okay? Lips zipped, please?” "Oh don't worry, this will only stay with us." Penny smiled as she gave Gumball a little kiss on the cheek. Gumball blushed as his eyes widened. ”She..kissed me!” Gumball sighed with happiness as the two padded lovers embraced each other. Before drifting off into relaxation, Gumball’s final thought rushed through his head…

“Atta boy, Gumball! Just like you said: smooth, suave...and sweet!”