Note: This story is for die-hard watersports fans only. If being pissed on, bathing in or drinking urine, or puking offends you, then please do not continue reading. If you do and get offended anyway, then don't complain that you think it's disgusting.
Nyssa had always been a water girl. In fact, her first and middle names were in reference to a water-loving tree, Nyssa aquatica. Her mother was a professor of silviculture, and being that water tupelo (Tupelo, Mississippi is actually named after it) was her favorite tree, had named her daughter, Nyssa Aquatica Carlisle, after the genus.
As a girl, Nyssa lived up to her aquatic name. She learned how to swim at a young age and was always playing in the bath, or as she got older, the pool, a river or wherever else she could shuck her clothes off, and swim or walk around nude. While she was in college, she met her boyfriend who was very much into watersports, although a variety quite different than what she was used to! She was shocked, the first time he inquired if he could urinate on her in the shower, but reluctantly agreed anyway. As it turned out, she absolutely loved it! Soon, she was allowing him to piss all over her body, including her face and hair, and one day, she opened her mouth and swallowed a gulp of his golden nectar. At that point, she was hopelessly hooked on pee and everything it involved.
Word quickly spread, and Nyssa was soon invited to all of the frat parties, where everyone in attendance - male and female alike - would approach her as she sat nude in the bathtub, and piss all over her, soaking her hair and warming her cold tits and erect nipples with steaming hot urine. Sometimes, there would be enough of it in the tub that by the time the night was over, she could actually bathe in it! Her boyfriend, Randy, absolutely loved seeing his little piss mop soaked in everyone's urine, and always eventually ended up fucking his pissy little slut in front of everyone.
As Nyssa's all-important 21st birthday approached, Randy decided to make it a very special day for her. She had once confided to him that in addition to being pissed on by many people at once, it had always been her dream to either take a long shower from a large supply of fresh urine, or to completely immerse herself and swim around nude in a pool filled with it. Both were pretty far-fetched fantasies, although the shower might not be that difficult to pull off, if enough people were present to fill a gravity-fed system like you use on camping trips.
Swimming in a pool full of piss seemed to be pretty much impossible, as the amount of time and people it would take to fill a vessel of that size would allow that much urine to spoil and turn into ammonia before it was anywhere near full. He was determined to make it happen, however, for his special little piss loving whore's special day.
Randy shared his outlandish idea with some of his buddies, looking for feedback and suggestions. One of them, a beefy quarterback on the football team named Bill, had an excellent suggestion.
"Well, it ain't no swimming pool," he began, "but my uncle has a pretty big farm, and they put these huge tanks of water on wagons and pull them behind the tractor to irrigate the plants, 'cuz they can't afford one of those giant sprinklers on wheels."
"How big are they?" Randy inquired, his interest piqued. "I don't want a little puddle of piddle here; I want a pool of piss. Something big enough that she can fully immerse herself and maybe even bob around in."
"Three hundred and fifty gallons." Bill replied. "They're four feet square, and almost six feet tall. Your lady's only five foot six or so, so she could tread water - well, urine - and even swim around a bit without her feet touching the bottom. She can even submerge herself completely while still standing straight up."
"Hey, that sounds perfect!" Randy exclaimed. "She'd love that!"
Just as quickly, however, his grin of excitement waned, and a look of dark disappointment crossed his face.
"But there's no way in hell we can get three hundred and fifty gallons of piss in there without it going rancid." he pointed out.
"Sure we can!" another attendee to the piss party powwow named Phil, piped up enthusiastically.
He was a technically a science nerd, with an IQ of 153, but just about everyone liked him because he didn't look or act like an egghead. He worked out, was into popular music and could hold his own against a lot of the jocks in sports, and had once even kicked the shit out of an activist who got in his face while he was walking down the sidewalk.
"It takes about twenty four hours for human urine to go rancid under normal conditions." he explained. "How many pitchers of beer can a guy go through on a Sunday afternoon alone, watching games on TV?"
"Two or three for me," Bill offered, "and I don't even want to know how you know how long it takes for that to happen!"
"At a gallon per pitcher, that's a couple gallons of piss per person, over say, twelve hours." Phil continued. "How many people were you planning on inviting?"
"Anyone who wants to drop by." Randy answered. "It's an open invitation. There could be as many as three hundred or so. Maybe more; I don't know."
He smiled and nodded in realization.
"One gallon of piss per person would just about fill it!" he exclaimed exuberantly. "If everyone shows up early and starts drinking beer - or soda for those younger peeps - it should be topped off and overflowing by late afternoon! Even if it's a bit short, we can add the garden hose and fill it the rest of the way. It'll still be full of urine; just diluted a bit is all. It'll be watered down anyway, so maybe a little yellow food coloring in there will top it all off."
"Perhaps we should send out instructions along with the invitations." Phil suggested. "Drink as much as you can, but you have to piss in the vat!"
"We'll have to put it outside anyway. We could build a deck on one side!" Randy said excitedly. "Everyone can piss in it from there."
"She likes being pissed on too, right?" Bill followed up. "Let's get one of those plastic kiddie slides from the Home Korner, and anyone who wants to piss on her first, can watch it run off her body and down into the pool. It'll be like a water feature, except it'll be filling with piss instead. Those tanks aren't completely clear, but you can sort of see through them. Everyone will be able to see her swimming around in that tank full of piss."
"She'll love it!" Randy burst out. "Anyone who wants to jerk off on her can give her face a load once she's in the cesspool. A pool full of piss AND cum. She'll absolutely love it! I'll bet she'll have an open mouth for all the cum and even more piss than she can swallow! Thanks for the great ideas, Guys. Now, let's work on putting all of this together and making it happen in time for her birthday. I'll fill her in on everything tonight, after dinner. The only problem is, where can we do it? We need a lot of space and someplace private if she's going to be nude and stuff."
"I'm sure my uncle won't mind donating the vat or the space," Bill chuckled, "as long as he gets an eyeful."