The Filthy Festival - Part 3 - Further adventures in the PortaPotty

A loud bang brought him to his senses. Anxious steps and deep bass groan from the toilet next to the one he occupied made him aware of another fur about to do his business. 
Reclining against of mound of soggy toilet paper, poop, his body half-submerged in lukewarm piss, somewhat confused and somewhat woozy, the 10-year-old foxcub perked his ears.
A loud creak followed so close he thought it might be his own stall that was being occupied, but the insistent growling and a splatter of poop raining down was obviously the one next to him. He listened with naughty delight as the occupant groaned and moaned his way through an obviously unpleasant morning shit, wishing it was his own stall that was being used so.
Some rustling came and the door banged loudly, even shaking the walls of where he himself was situated and the naughty little cub came up with a devillish idea. He climbed up the somewhat disturbed mound he had been leaning against and managed to haul himself halfway out of the rim of the portapotty, taking a look around. 
Here, it was easier for him to discern the time, because it was possible to glimpse light at the airvents in the top of the structure. He knew how to track the sun and had looked at a paper map of the festival grounds, so he knew the toilet he was in had its door facing due south. With the powerful sunlight somewhat coming from the left he guessed that he had been out for a couple of hours. The stink was just as bad up here as down in the pit and the air was really starting to heat up inside the portapotty, Billy's brownsmudged fur beginning to grow damp from the greenhouse like warmth, just as bad as the tent he had "escaped" just a few hours ago. The stink aroused him, as his foxdick started hardening up in his sheath, a teenager's horniness and stamina making it possible for him to yet again play around. He was still holding himself halfway up the rim and thought of how to go about his naughty business.
To the side was a plastic bag mounted on a steel holder, to be pressed so the bag would open for stuff like garbage and female hygeine products. With some effort he reached over and tried opening the bag, and to his luck it was totally empty. He yanked the plastic bag off its holder, leaned down to his discarded sandals and his shorts, and was able to fit it all inside the bag. Lastly he made a triple knot on it so no foulness could enter, and he threw it down into the portapotty, to the side so it wouldn't get in the way or be too obvious.
Then he took a glance down himself, and noticed that he had spattered the toilet seat and the flat area around it with runny smudges of poop and pee. He grabbed a long row of toilet paper from the holder opposite to where the plastic bag had been, and started cleaning up, also cleaning his hands so they wouldn't stain further. After he made the toilet look nice, he reached out and with some difficulty from his position was able to unlock the toilet stall.
Billy now let himself quickly fall down into the mound he had so precariously been standing on, and wormed himself under the top layer of filthy toilet paper and fat and runny turds alike, trying to camuflage himself. He grabbed a piece of cold turd and brushed his teeth with it, the nasty taste just a precourser of things to come, then he grabbed some soggy toilet paper and covered the top of his eyes with that. 
Then he sorta spread out his arms like angelwings and tried to position himself so he could catch whatever would come down his way, certain that his covered eyes and his now utterly brownstained teeth would keep him hidden from anyone coming to do their business, and the rest of his body was solidly embedded into the filthy mound.
It did not take long for someone to open the door and step in, a barytone voice grumbling with displeasure of the incredible stink coming from the pit of the portapotty. A zipper was opened and soon a powerful jet of urine was landing all over Billy's face, some of it landing directly in his mouth with a low sloshing sound. He didn't have any choice but to swallow down the incredibly acrid piss, even more pungent and powerful than his daddy's. The stream was not stable, as the new occupant of the stall was letting his piss go everywhere down the hole, and an errant splash washed away the toiletpaper covering the foxcub's eyes. 
Foolishly he decided to open them and see who was giving him such a delightfully naughty treat, and was instantly blinded with pain as the acrid fluid crept into his eyes. Though he did see who was serving him: a powerfully built equine adult maybe as old as about 30, who had his eyes closed and was swaying a bit as his hungover morning piss gave him such release and pleasure that he was moaning almost inaudibly. 
Billy was crying salty tears from the pain in his eyes now, and was struggling to keep up with the flood hitting his face as the horse was now standing somewhat still and concentrating his stream on the top of the mound. Someone might have called the experience some kind of waterboarding, as the cub had great difficulty breathing through all the liquid hitting his snout and mouth, every gentle breath of air hampered by salty piss flowing into his nostrils. His eyes were still stinging and he began to get lightheaded from the lack of oxygen, yet his foxdick was hard and proud under the mound, and he slowly moved his right paw through the muck to be able to touch himself while enduring the treatment. 
Just as his hand grabbed his meat, the shower was over, the stallion huffing as he enjoyed the temporary feeling of bliss from having emptied his bladder. He didn't even bother to wipe himself and quickly left the stall as his relief turned to disgust from the smells and his fur swiftly growing damp from the high temperature inside the stall.
As soon as the door slammed shut, Billy gasped loudly for air and laid there panting for a while, slowly pleasuring himself with his paw, very aroused from the naughtiness of what he was doing, each touch sending shivers of pleasure up his spine and his senses hyper-alert being able to smell and taste and feel the filth and the lingering taste of that deliciously powerful stallion piss.
His reverie was interrupted as yet another occupant entered the stall. Billy kept his eyes almost completely shut, to hide them from the new arrival, and was surprised when two kids about his age came inside together.
One was a tiny bunny who was overshadowed by his wolf friend and the floor in front of the toilet rim was barely enough for the both of them.
"This is stupid Alex," the wolf said, "why didn't we just go pee at the hedges like our daddies do? This place smells like a skunk crawled in here and died!"
Alex the little bunny was clutching his tummy now with one paw and swiftly lowering his shorts with the other and replied: "Sorry Johnny, I'm just too emberassed to go pee with all the grownups!" 
"But why do you need me to come inside with you as well?" the bigger wolf exclaimed
"Once I locked myself inside one of these things and couldn't get out, the door was too tight to open and I had to wait two hours before someone heard me and got me out!" the little bunny protested. 
"Oh well, that has never happened to me, but I'm also much stronger than you!" the wolf said in a teasing tone, and un-gently gave the little cub a painful punch on his shoulder.
The bunny lowered his ears in emberrasment and Billy felt for him and blushed slightly as well, somehow turned on by the little cub's emotions. The small cub was now lowering his underwear and quickly leaned forward and aimed his tiny cocklet into the portapotty, a quick stream of sweet bunnypiss flowing directly into the horny foxcub's muzzle. 
Billy's mouth quickly filled up and he started to ever-so-slowly swallow down the sweet cubpiss which tasted like carrots that were lightly salted, making sure his swallows were shallow and noise-less.
Johnny the wolfcub now had his sheath exposed, a little bit of red betraying his pissboner and showing just how much more mature he was, and a much stronger stream of musky wolfpiss splattered all over Billy's face.
It was like the stallion all over again, he could hardly breathe, only feel and swallow as two streams of cub piss entered his mouth and nostrils at the same time. He was forced to inhale through his nose and rivulets of surprisingly powerful wolf piss ran down the back of his throat, threatening to make him sneeze or cough and give away his position. 
As his body was positioned in the mound so that his legs were pointing towards the entrance, he was able to overcome this challenge by furiously mastrubating himself, unbeknownst to the cubs, and the lack of breath and the constant swallowing of urine made his foxdick twitch with pleasure even as his eyes saw stars and his mind began to drift from the lack of air.
But these cubs had smaller bladders, and it was quickly over and Billy had to reduce his fapping to gently caresses to avoid being heard. 
A loud fart came from the wolfcub's behind, the long and blubbery kind that indicated he had to poop really bad. The bigger cub half-shoved the bunny to the side and jumped up on the toilet, his legs long enough to actually touch the floor as he lowered his rump onto the rim. The potent smell of wolf-gas filled the portapotty, even creeping down the hole and tickling Billy's nose, but it was much worse for the bunny who felt his eyes running with tears from the pungent fart.
"Ewwww Johnny, that's just so nasty!" Alex exclaimed, and tried to cover up in the corner while covering his nose with his small paws. 
"When a man's gotta go, he's gotta go," the wolfcub said with cruel satisfaction, enjoying how he was tormenting his smaller friend.
With a groan that had such a deep tone it was like his voice was an adult's, Johnny released another big fart before his grey-furred anus opened up and showered billy with a barrage of semi-liquid cubscat. 
The foxcub had taken in the scene with some fascination, and had actively lifted his muzzle so it was a little bit closer to the wolfcub's ass, and was rewarded with most of the scat dropping directly into his waiting mouth.
Tasting such pungent and vile shit from a cub came as a surprise, and Billy had a hard time swallowing it at the same pace it came out. He had to lower himself into the mound again and let the wolfcub shit all over his face and top of the mound as he struggled to force the nasty shit down. The taste of several kinds of meat and a hint of beer convinced the foxcub that this wolf was quite naughty and perhaps older than he had originally thought.
The moans and groans from Johnny, and the continuous sounds of shitting, made Billy once again mastrubate with some force, as his hard cock was practically spasming from the horny naughtiness of the situation.
It got even more pungent as the wolf groaned and pushed out some almost watery scat that Billy was able to ingest by simply keeping his mouth open and letting it glide down his throat, the taste even more vile than before with a much heavier taste of hops and the sourness of beer. Definately a bad puppy unloading on him!
Johnny groaned and expelled a small squirt of liquid shit that took Billy in the eyes before wiping himself, letting the foxcub be buried under dirty toiletpaper.
"Ewwww, it smells so bad!" the bunny complained, a queesy tone to his voice.
"Yeah, I tasted some of dad's beers yesterday, it must be those who have upset my stomach," the wolf said with just as much queesiness, his restless bowels troubled by the stink coming up from the portapotty.
The two cubs quickly buttoned up and Johnny opened the door, letting the bunny out first, giving him a playful smack on his rump as he scampered down the steps.
As the door slammed shut once again, Billy furiously clawed at his face, using the already brownstained pieces of toilet paper that clung to his face to wipe the runny scat off his tearful eyes. Not all experiences down here were equally pleasant, he mused, as his erection died down somewhat.
But he decided to persevere, his third orgasm of the day still elusive and he began mastrubating himself again, reminding himself of the naughtiness of the situation and the taste of horsepiss, of bunnypiss, of wolfpiss and delicious nasty cubscat smeared all over his muzzle and face. He came closer and closer to orgasm but was interrupted yet again as the door creaked open and someone grumbling and groaning made his way into the portapotty.
"Goddamn kid, running off to God knows where!" the voice complained, "Sexually assaulting me while I sleep and then scampering off before I could give him what he deserved, damn ungrateful kit! Here I had a stomach full that I could feed him with and that rascal just runs off to do whatever, dammit!" 
It was a voice he knew well.
It was his dad, Brian the perverted fox.
A burbling came from his stomach as he hastily pulled down his shorts and began to sit down..
Billy lifted himself off the mound and cheerily said, "Hi dad, do you have a meal for me?"