Killua was in a rotten mode as he headed for the closet park in town, huffing and growling over him and Gon having a fight. 
It was just so stupid! Here he was, a deadly assassin and for the 6th time this month they'd woken up in a bed drenched with pee. Lord knows Gon was trying to be kind and supportive but really, who could blame him for getting tired of waking up soaked?
Gon wanted Killua to start wearing 'protection' at night to bed, but the deadliest bed wetter alive refused to go that far, he had already comprised and let Gon put rubber sheets on the bed so hotel staffs stopped giving them a hard time hadn't he?
In any case they had taken a shower and gotten dressed, and Gon asked Killua to go for a walk by himself and think about what he had said.
'Screw that nonsense.. I'm go and cheer myself up the best way I know how!' Killua thought as he came to the playground area of the park. Nothing lifted his spirits like a little bit of harmless bullying.
Scanning the play area Killua spotted a good first target. a 5-6 year old with dark tanned skin and a black brush cut was digging away in the sandbox, making a moat around a sad looking sand castle he'd made with one hand, while licking away on a mint chocolate ice cream cone with the other.
spotting a plastic bucket with some water in it for the moat, Killua smirked and strolled over. 
"Nice fort little guy." He said sarcastically, getting the boys attention and the kid gave him a smile. 
"thanks! I was working on it for like ever!" The little guy said, apparently not recognizing the tone.
"Heh, Would be a shame if something happened to it though." Killua chuckled. "you did get house insurance against giants right?"
"Uhhh what?"
"well what if some big mean old giant.." Killua started, stepping into the sand box now. "Just came up..and did THIS!" Killua asked and stomped his foot down on top of the fort, snickering as the little guys eyes went wide.
"HEY! WHY'D YA DO THAT?!?" the little guy yelled, starting to stand up and with tears welling in his eyes. 
"Because i'm better, stronger and therefore better then you. Little dorks have to get put in their place." Killua sneer and then grabbed the arm holding the ice cream cone and make the kid smuch it onto his hair. "Geez you little dorks are SUCH messy eaters!"
The boy squealed as the sudden cold on his head and how icky it felt. 
"S-Stop this! I-I" the boy tried to make his threat clear but he was also trying not to full on bawl.
"heyyy don't worry about it, I'll help you clear up!" Killua laughed, then snatched up the bucket with the water in it and dumped it on the boys head, then tugged it down over the kids eyes. 
"Hey, that's a good look for you, but it's missing something." Killua said and sneered, then turned the boy around and tugged back the kid's short then tanked up on the poor little guys briefs. 
"Awww, a fan of sailor moon I see!" Killua teased and hooked the back of the briefs on the back of the bucket, then booted the kid in the ass, sending him sprawling out of the sand pit. 
"Alright, I had my fun, get the fuck out of here before I decide to be mean." Killua said cheerfully. 
the thought that all of this had been Killua being nice light a fire under the boy's butt, and he ran/crawled off, not even trying to remove the helmet or pick the wedgie out of his butt.
"well, I feel better already." Killua commented to himself, though he noticed a few other kids and adults glaring at him. 
"Oh by all means, anyone who wants to try and punish me.. " Killua said, going from a happy goofy look to his slash smile. "Step up." 
no one did.

After scaring two more little guys into give him all their ice cream money Killua was in the middle of getting a cone (Double chocolate mint just like the dork had had, it had looked good after all) when he heard a familiar voice.
"That's him Carlo! that's the bully!" cried the dork from before.
Turning around slowly Killua smirked, Carlo was clearly the dork's big brother, and while he was a little bit taller then Killua he had a slim build and the same tanned skin, though his hair was a bit longer while still being short.
"Ok mister, I'm going to give you ONE chance to say sorry to my little brother, and get him a replacement cone. If you don't.." Carlo said, crossing his eyes and glaring at Killua with a death glare.
Killua, who gave those out with ease froze for a tiny fraction of a second, and his bladder twitched, but he shook it off and took a long lick of his ice cream to show he wasn't scared, and to give him time to regain his composure.
"What? If i don't you'll do -what?-" Killua asked. "Try and fight me and end up hanging from the teeth ball pole by your undies? I mean, I'm mostly in a good mood now but if it's a ass kicking you want." Killua sneered. 
Carlo rolled his eyes, then smirked. 
"You know..I've been in a bit of a funk lately, and beating up bullies always makes me free better.. so thanks." He said. 
Killua raised a eyebrow to thank but before he could react, Carlo was right next to him, and much like Killua had done before, taken a gripe on the arm with the ice cream cone.
On small difference though, Carlo wasn't going to make him put it in his hair and had tugged open the front of Killua's shorts and undies.
"W-Wait d-don't!" Killua shrieked, his plea fell on deaf ears though and he was somehow powerless to over come the taller boy power.
As such, a high pitch wail was heard as Killua's twig and berries got a double mint chocolate coating.
Killua's eyes crossed and a cartoonish image flashed in his mind as it felt like his private had just been transformed into two ice cubes and a Icicle, then there was sudden relief and warmth, making him stick his tongue out the side of his mouth in blessed relief.. at least until he noticed the warmth was traveling down his legs.
"heh, Carlo the bully wet himself!" The little guy pointed out, snickering and getting out his phone to take pictures.
"I can see that buddy, Aww, did the cold cold ice cream make da big bad bully go wee wee?" Carlo asked, folding his arms over his chest and baby talking to Killua.
"i..I uh.." Killua stammered, Sure, he was no stranger to soaking his pants at NIGHT while he was asleep, but this was a new one for him! "I..didn't go tinkle?" He finished lamely.
"Rightt then whats that making a puddle on the ground right now and staining your shorts." Carlo asked.
"..I don't have to answer that! In fact, I've had enough of false accusation's and I'm leaveing!" Killua huffed and turned around to do just that, but also exposed his back to his new found enemy.
Carlo, knowing that Killua had wedgie his little brother Hector, moved in and with on hand tugging Killua's shorts back the other grabbed the waist brand of Killua's Barney briefs and lifted up before the poor hunter even had a chance to fight back.
Killua's mouth opened as if he was screaming, and while dogs howled in pain no one with human ears could of heard the noise coming from his mouth, it was that high pitched. 
Carlo smirked at the response and said "Awww, Barney briefs? that's just soo..fitting! But I wonder how strong they are?" then adding his other hand to the back of the waist band even as Killua looked over his shoulder and shook his head no, bringing his hands together pleading, Yanked the soon to be ex-hunter off the ground by a good 2 inches if now more and dangled him there as Killua turned pale and went blank eyed.
"Oh wow, those must be reinforced Carlo!" Hector marveled, recording this all for YouTube. 
"I know, kinda a shame, if they weren't they'd of snapped by now and he'd know SOME relief." Carlo chuckled then turned him and Killua better into frame for the camera. 
"hi I'm Carlo and this is a big bully who tried to pick on my little brother..Huh, never caught his name.. Hey wedgie boy, whats your name?" Carlo asked and holding Killua up with just one arm delivered a hard swat to Killua's buns, which also ended up making his shorts slide down around his ankles showing off his pee stained undies.
"A-AH! M-Mah name is Killua Zoldyck and I'm super super sowwy! Pwease stop!" Killua begged and pleaded, in a voice that sounded like he'd sucked on some helium.
"I dunno Hector, what do YOU think? Has Killua had enough?" Carlo asked, and Killua shot the boy he'd bullied a pleading look, bottom lip trembling and tears welling up.
"Hmmm you know I really think..that you should use him like a yo-yo till his undies snap. THEN I'll forgive him!" Hector giggled. 
With both hands on the waist band Carlo went to work even as Killua started to blubber and cry for his mommy.

It ended up taking a record breaking 55 bounces before Killua's undies snapped, and by that time Killua had gone to la-la. with his undies snapped and ripped off off he was too out of it to notice that he was currently face down butt up with nothing covering his der rear and his bubble butt and little package showing.
"oh man.. that explains why he was in such a bad mood.." Hector giggled, having turned off the camera for now but uploading the video. (after all, even with a member as small of Killua's the mods on YouTube would of removed the video)
"man, makes me feel like I picked on a over sized toddler. feeling a little guilty." Carlo said, though in truth he wasn't really.
Killua's shorts were gone by this point as the boys who's ice cream money he had stolen had retrieved them, and after finding some of the cash and taking Killua's wallet, had tossed them in a bin meant for dog waste.
"Well, nothing we can do now, we don't have any spare pants for him." Hector pointed out.
"Well not quite..remember that weird vendor we passed on the way in?" Carlo said, digging into his pocket and pulling out some bill's. 
"Heh.. you don't mean.." Hector asked.
"A yup. be a good boy and run and get widdle Killua something to wear." Carlo said, handing the money over and keeping a eye  on 'sleeping beauty' while Hector ran off.

Killua was having a wonderful dream about having a endless buffet of candy and chocolates and it was so nice after what must of been a nightmare where he was tormented and bullied beyond belief. 
He was slowly waking up and rolling over to sit up and rubbing his eyes. "Nggggh Heyyy Gon, you wouldn't believe the night..mare..I.." Killua started to say then opened his eyes, seeing Carlo and a semi crowd all around. 
"Welcome back to the land of the living tiny!" Carlo said.
Killua huffed at that and stood up, about to tell Carlo off, he wasn't THAT much shorter when a breeze blew and he noticed how much he felt it on his on buns. 
Looking down his face went crimson and Killua grabbed at his shirt and tugged it down, trying to cover up his privates.
"W-WHERE THE FUCK ARE MY UNDIES? MY SHORTS?!" Killua yelled, getting roars of laughter from the crowd. 
"Well your undies were totally wreaked so we tossed them." Carlo said, nodding over to a waste bin for normal trash. "As for your shorts, there was a couple of boys you really seemed to annoy earlier and after getting back they're ice cream money with interest, they tossed them in the dogie waste bin..I doubt you'll want them back." 
"but..but.. I can't go around with my ding dong on display!" Killua whined and whimpered.
"That's true. don't worry, I already thought of that shrimp." Carlo said and nodded behind Killua. 
Killua turned to look and there was Hector, the brat he wished he'd never of picked on, running back with a pack of...DIAPERS!?
Killua whimpered loudly, a spurt of pee coming out and soaking the bottom of his shirt as he turned back to Carlo with pleading eyes.
"Please no! anything but diapers!" Killua whimpered. "I'm not a baby!"
"heh, Are you SURE about that?" Carlo asked, looking down and making Killua's gaze follow to the damp spot on Killua's t-shirt. 
"i..but..that was because.." Killua mewed then shrieked and jumped, grabbing at his bun's as Hector came in range and walloped Killua's baby butt.
Ironically when he came down he landed in Carlo's waiting arms, like a blushing bride. 
"Awww how cute, but you really think I'm gonna save you?" Carlo asked, then dropped Killua onto the hard ground and onto his tender buns. 
"S-Stop being s-so mean to me!" Killua whined, on the verge of anther crying fit.
"Sheesh, I should of gotten him a paci." Hector said, handing the pack of diapers over to Carlo then tugging the shirt up and off of Killua, using it as a tear rag then tossing it out.
"Oh wow, Lookie here Killua~" Carlo said, reading the pack then holding it in front of Killua's face then read from the back. " 'New little poopers punishment diapers are perfect for your so called big kid who refuses to use the potty! extra thick to ensure they waddle, it comes with a embarrassingly babyish nursery print we promise to have your little stinker blushing bright red. with a special stink guard you and the big baby won't have to deal with their stink!' Heh wow, Oh look, they offer alt versions, that's something to keep in mind if you need more lessons." 
Killua meanwhile was looking at the front of the package, showing sobbing pre teens in the bulky diapers and smirking parents.
"I-I changed my mind! I'll go home naked!" Killua whined.
"Nonsense! what kind of person would I be if I let you go without the diaper you CLEARLY need!" Carlo said, as if he was doing Killua a favor. "This is gonna go down one of two ways loser. You can either lay back and suck your thumb while I put as many of these as I can on you, or I can kick your ass, knock you senseless..then put as many of these as I can on you. Either way, you're going back to diapers. YOUR choice."
Killua pouted, started to ball a fist up.. then sighed and laid back, popping his thumb in his mouth and turning away from the crowd as laughter and taunts rang out. 
"Loser!"
"Big baby!"
"Wuss!"

Carlo was a little disappointed that Killua decided not to fight back, but he had to admit seeing the wanna be bully accepting his big baby fate was kinda cute.
ripping the back open open Carlo smirked, dispute being the size of a pack that should be able to hold 16 diapers, there was only 6 of them in the pack and he pulled on of the massive things out, making sure everyone could see all the rattles and paci's and teddy bears and the like all over the diaper then unfolded it.
"Ok Shrimp, Butt up! If i have to lift you up I'm giving your buns a swat!" He said and wasn't shocked when Killua's butt almost levitated up in a instant to avoid any more punishment. "good boy!" 
getting the almost pillow like diaper under the loser's butt, he gently pushed Killua's butt back down and smirked as Killua loudly sucked on his thumb, getting drool going down his chin as Carlo pulled the front up nice and snug and then taped it up. 
"Welcome back to babyhood Shrimp." Hector said, leaning down and snickering, and making Carlo beam with pride. 

In the end they only manged to double diaper Killua, the diapers were just too massive and they ripped a third one trying to get it on the babfied brat. 
After he was all nice and snug in his diapers Carlo told Killua to try and get up and to Killua's massive shame, not only could he NOT get up on his own, but he couldn't even get close to bringing his knees together.
The fourth time he just plopped down on his butt trying to get up, Carlo rolled his eyes and chuckled.
"-sigh- Ok Shrimp, let me help you." Carlo said as if he was doing Killua a favor. 
Holding out his hands Killua took them and got yanked up to his feet, legs wobbling as he tried to center his balance. 
"heh, you might need a bit to get used to waddling in there. Try waddling over to that tree over there." Carlo said, pointing to a tree that would of only been 10 seconds away normally, but with this massive bulk taped around his hips it might as well been a mile away.
Still, Killua knew better then to argue at this point and took a wobbly step, then anther, and smirked, thinking he was getting the hand of it. 
'I got this! I can-' He was thinking when his fourth step went wrong and with a loud yelp Killua plopped on his butt, a shocked look on his face but not hurt considering the thick padding under his butt.
"Awww, widdle baby Killua doesn't know how to walk!" Hector giggled, getting more laughter from the crowd. 
"yeah, guess you better stick to crawling shrimp..you CAN at least do THAT can't you?" Carlo asked, tilting his head and smirking. 
Killua huffed, he wanted to try and walk again but knew he wasn't getting any help and there just wasn't anything to help him get up to his feet with around. He toyed with getting in the crawling position and pushing himself up THAT way but had a feeling while he'd be in the middle of it Carlo would just smack his butt and send him face first into the dirt.
getting on all fours and trying to drown out the snickers and flashes of camera phones going off, Killua rolled around and got on all fours and then slowly crawled over towards the tree, glad that he had been right that he could crawl at least.
'at least i didn't have to do a diaper scoot across the ground, knowing my luck it would of ripped apart the diaper and I'd of gotten a spanking.' Killua thought with a sulk as he reached the tree.
"Well well, at least you can crawl, I was worried I was gonna have to carry you over." Carlo snickered. "Now use the true shrimp and get to your feet, and shake that diapered ass and sing us a song about what a big dumb baby you are and how happy you are to be back in diapers."
"..Your joking right?" Killua asked, jaw dropping. "There is NO WAY in hell I'm gonna d-" he started started to say but Carlo cracked the knuckles on his right fist and and light tapped his fist into his open left hand.
"You SURE about that?" Carlo asked.
"..W-what If I can't think of any lyrics because I'm a big dumb baby?" Killua squeaked out, flooding his pampers.
"I'm sure you'll think of something. It's ok if your dumb is lame though, your just a diaper baby shrimp." Carlo said. 
Grunting with effort, Killua pulled himself to his feet, hands braced on the three and looked over his shoulder, the crowd was watching with delight and he trying to think of something, anything to sing.
"I...I'm big baby Killua and I'm so happy.." he started, wiggling his diaper, shutting his eyes. 
"Because a big strong boy put me in a nappy! 
Diapers are totally wear I belong! 
so I hope all of you love my big dumb baby song!
I thought I was a bully but I'm just a dweeb
filling my diapers up with pee pee
If i ask for undies look at me like I'm a nut
then make baby poop with a punch to the gut!"
The act of singing the song and keep his eyes closed so he didn't have to see the crowd (though he could hear them laughing and cheering him on) had Killua's body getting into it and he was shaking his diaper booty like there was no tomorrow.
"Stupid babies like me we don't need to think!
we just sit in our diaper and super stink!
Watch me prove that as a baby I'm the best
I'm gonna fill my diapers with a super big mess!" 
Killua's eyes shot open at that, had he really just promised that!? worse, his body was again moving on it's own accord  and he was squatting down now, grunting and pushing, puffing out his cheeks.
'no no no no! why can't I stop myself! GOOOON! HELP!' Killua thought.
"Killua? whats going on?" Came Gon's voice.
Killua almost didn't believe it at first, it was just he wanted Gon to save him that he heard the voice of his boyfriend! But no, a look over his shoulder showed Gon standing there, eyebrow raised. 
"G-Gon you have to s-save me! I-I-I.." Killua tried to tell Gon about what had happened, how he'd been victimized but before he could get the story out, something else came out in the back of his diaper. "I'M POOPING!" Killua cried out.
 if the muffled farts hadn't of been hint enough, the back of the THICK diapers bloating out and getting even bigger would of given it away, and despite the diaper's boast of super stink guard, Killua's backed up stinky load (he hadn't gone in 5 days) was filling the area with a rotten smell, driving part of the crowd away. 
Gon for his part just held his nose and then shook his head. 
"Really Killua? You won't wear diapers to bed despite being a bed wetter, but you'll load them in public..Your coming with me mister man." Gon scolded and walked over.
"Um.. Should we tell him-" hector started to ask Carlo, holding his own nose. 
"Nah, it's better this way. you can get out of the area of effect though, I'm gonna go say by by to baby Killua."

Walking over Gon was scolding Killua and swatting his boyfriends mushy butt as Killua whined and whimpered, sucking his thumb and still going. 
"Hi, I'm Carlo...I was watching your little guy today." Carlo said, holding out a hand. 
"Oh, well, thanks. I'm sure he was a handful." Gon said, giving Killua a look then shaking Carlo's hand.
"well he wasn't that bad. it was a lot of fun actually. anyways, here's the rest of the diapers Killua got and asked me to put on him, and if you even need a babysitter, give me a call." Carlo said. 
"Heh, i just might, give me your number." Gon said, taking out his phone and handing it to Carlo, one hand still mushing Killua's tush. 
"there we go. anyways, you two have fun! Byeeee baby Killua! you were LOTS of fun to play with." Carlo said and waved bye to the stinky big baby.
"Killua, don't be rude!" Gon scolded.
Killua whimpered, knowing there was no way he was living this down, he was gonna be in diapers for at LEAST a month..and knew it was pointless to try and tell the truth now. 
Sliding his thumb out of his mouth as he finished loading his diaper, he gave a weak wave to Carlo and in a small voice said 
"Bye bye."

The end