Not my usual cup of tea, but requested. Purely PWP. Involving bodily functions. Turn back now if that makes you squeamish. Otherwise, read on...
F.Y.I, it's not my intention to bash any characters...trust me, they will all [mostly] get their chance
"For Crap's sake, Hinata, hurry out!" Naruto whined, "I gotta go!"
Naruto did a little dance outside the academy's only public bathroom, as the men's room had a line and the women's was obviously off limits for him. Hinata could have used that one, but she was desperate.
"Well if you weren't so eager to play that stupid joke on me with Sakura-chan, I wouldn't need to hog the restroom!"
The joke in question was slipping laxatives into Hinata's pork buns, leaving her...indisposed for the time being. Naruto's need for the bathroom only grew stronger upon hearing Hinata releasing a propulsion of gas from her rear end. It had been like this a while now, nor did it seem like it would end anytime soon. When he had first needed to use the bathroom, he was not going to wait patiently for the door to unlock. Foolishly thinking there was no one inside despite the fact that it was locked, Naruto bent down to slip under the stall door, only to find a dark blue pair of pants pulled down, covering anything below her shins, save for her sandaled toes. He did jump back after Hinata squealed at the sight of someone peeping in, but it didn't make him less desperate.
"Look, I'm sorry, okay?" asked Naruto, "That was rotten of me, I know!"
"And yet, you laughed at me when I had to run out of the cafeteria almost shitting myself," Hinata said morosely.
As Naruto anxiously crossed his legs together to hold it in, the frequent sounds of Hinata dropping multiple loads into the toilet were enough to send him over the edge.
"Hinata, please!" Naruto begged, "I'll do anything to make it up to you!"
"...anything?" asked Hinata.
"Yes, anything!" replied Naruto, "Now please let me in!"
The thing about the public bathroom was that since either a male or a female could use it, there was both a urinal and a toilet. So in theory, there was no reason two people (except two females) couldn't use it at the same time, provided they didn't mind having no privacy. After hearing the door unlock, Naruto dashed into the bathroom and unzipping his pants, hearing nothing but angels singing once he was in.
"Jeez, Hinata," Naruto said scrunching his nose, "You REALLY stunk it up in here."
"And who's fault is that?" asked Hinata rhetorically.
He didn't answer. He knew what it was already. As the two ninja students continued to relieve themselves, they both were slightly more at ease with each other.
"So...what exactly did you mean by 'anything'?" asked Naruto.
Gas pills. That's what Hinata meant by 'anything'. To make things right with the bluenette, Naruto distracted Sakura with friendly conversation. Sakura was caught up in the subject Naruto was discussing with her (the subject being whatever was under Kakashi's mask), while in the blink of an eye, Hinata slipped the gas pills into the mashed potatoes that came with her yakisoba. After seeing Hinata disappear, Naruto abruptly took his exit, leaving behind a confused Sakura.
Hinata and Naruto chuckled to themselves after witnessing Sakura wolf down her food, and in turn, the gas pills. They didn't take effect immediately, though, which disappointed Naruto, wanting to see the results up close. Hinata, however, was quick to assure him that the next class would be their chance.
On the way to said class, Sakura ran up next to Hinata putting her elbow on her shoulder, despite the fact that they were almost the same height.
"So I guess you'll be avoiding pork buns for a while, Hinata-chan," Sakura snickered.
"That wasn't funny, Sakura," Hinata said.
"Hey, it got you out of class, didn't it?" Sakura asked smugly, "Even if it left you on the toilet shitting everywhere, but beggars can't be choosers."
Laugh it up now, Hinata thought, It'll be your turn shortly.
About ten minutes into class, half the class was nodding off to the slideshow that even the teacher had fallen asleep on. Sasuke, Ino, Naruto, Hinata, and Neji had still been awake. Sakura, like some of her other classmates, was fast asleep with her head in between her arms. The class droned on until the few who were still awake heard a quiet fart.
"Seriously, Naruto?" asked Ino, "You just had to do that in class?"
"That wasn't me!" whispered Naruto.
"Dudes, it was Sakura," said Neji, "Trust me, I'm sitting right behind her."
Hinata and Naruto grinned at each other when Neji covered his nose.
"Don't be ridiculous," Sasuke said, "Sakura doesn't fa..."
Sasuke spoke too soon as she farted again, this time a little longer. Ino giggled.
"That is so gross," she said laughing, "Does she know she farts in her sleep?"
"I...don't think she does," Hinata replied, knowing the full reason why.
The crew giggled as a couple more farts made their way out of Sakura's ass. The kicker really came when, after a rather short but loud one (which also made her butt jiggle a little), there was a small but distinguishable brown spot right where her butthole would be.
"Did...did she just..." Sasuke was lost for words.
Hinata, Ino, and Naruto died of laughter, tears coming down from their faces. Sasuke only smirked, but went on shaking his head at the absurdity of Sakura's predicament. At this point, everyone, excluding the teacher, had woken up at the sound of laughter. Sakura was going to ask what her peers were laughing at, until she felt something in her shorts that should not have been there. She made the mistake of standing up to see what it was, exposing the shit-stain on her shorts to all her classmates.
All of whom began laughing as she tried to cover the spot in vain.
"WHAT THE LIVING FUCK?" screamed Sakura.
Sakura dashed out of the room in embarrassment as the class laughed on and on. Especially Hinata and Naruto. This had been far more embarrassing than what happened to Hinata, and also more public.
Needless to say, Sakura spent most of the remaining school hours in the bathroom, cleaning herself up and staying on the toilet until the gas pills wore off. But the damage had been done, and Hinata had beaten Sakura in her own game.