A study on Sodium Polyacrylate

Twilight woke up the next morning to a ringing to her ears. She slammed a hoof down onto the alarm clock that screaming next to her bed. She yawned as she slowly got out of bed until the mare noticed she was wearing her dark blue nightie. Twilight squeaked in surprise at first kicking about hearing the diaper under her rump crinkle. The mare blinked with an odd look on her face and murmured, “weird, I remember peeing in my diaper last night…”

The purple-coated unicorn slowly unzipped her nightie with her magic taking it off as she looked down at the pristine white diaper (with the purple stars wetness indicators still printed on the front of the diaper showing she hadn’t peed) strapped securely around her rump. Twilight jumped out of bed with a look of astonishment and shouted, “how did that happen! I mean I was studying, and I soaked myself last night. So how is there a new diaper around my rump!?”

The mare turned to see her assistant baby dragon Spike walk into the room with his mouth wide open. Twilight squeaked as she shoved a hoof over the front of her diaper making it crinkle loudly. Spike still just rubbed his eyes in disbelief and asked, “so...a...are you…”

Twilight who was now super embarrassed as she looked up and asked, ”Spike...did you change my diaper last night?”

Spike couldn’t help but burst into laughter. “No of course not! Anyways why are you wearing that!”

Twilight stomped a hoof to the ground and growled, “like as if I’m going to explain that to you! Now, are you going to help me or not!”

Spike shrugged as he walked over and tried un-taping the tabs himself around the front of Twilight’s diaper, but they seemed unable to budge. The mare shouted in horror. “Why can’t it come off!”

The mare tried pulling the tabs off with her magic and saw that nothing she did could get them off. Twilight Spark shouted, “how could this happen!” She groaned and tore out her mane as she was getting becoming more worried about being late to her test. Twilight looked across the room at her alarm clock and saw that she now had exactly one hour and thirty minutes left. She turned around towards her young dragon assistant and out of desperation, she shouted to Spike. ”Light it on fire!”

Spike squeaked with surprise and stammered, “a..a...are you sure?”

Twilight with her eye twitching shouted, ”yes please light it on fire!”

Spike gulped as he readied himself taking in a deep breath and in one swift motion the young dragon burped out a massive burst of flame lighting the diaper on fire. The diaper burst into flames making Twilight squeak stumbling backwards as the flames disappeared into a cloud of smoke. Twilight saw that the diaper was utterly unscathed as she shouted, “what! How could this happen!”

Twilight got off the bed and ran over to the package of diapers and turned it around reading the label. Warning: after eight hours this diaper can only be taken off by the one who placed them on just in case to keep the diaper from opening by another pony or by accident. After twenty-four hours the diaper will remove itself if no one else does so or one hour after an accident.

The purple unicorn groaned seeing down below. “These diapers are magic and fireproof buck!”

She threw the package of diapers at the wall as the neatly folded diapers exploded out from the plastic and flew all over the room. Spike turned around and asked, “was there any pony else who you had over last night?”

Twilight crossed her forelegs with a cute pout and scoffed, ”of course not! Nopony would have changed my diaper! But it doesn't matter the test is happening in two hours!”

The mare groaned as Spike shrugged and asked, “why don't you create an invisibility spell.”

Twilight looked down at the empty plastic that was on the ground. She saw something else on the package and read it. If you find yourself needing to have the diaper not be noticed it has an invisibility spell attached warning: The spell isn’t fully ready as these diapers are prototypes. Please Understand that means the padding will still be noisy and will always be around your rump.

Twilight was a bit astonished at what she read. “These diapers are weird…” But Twilight plopped onto her rump making it crinkle and looked down at the diaper around her rump and asked, ”um diaper turn invisible please.”

The padding instantly seemed to have disappeared making it look nothing was there. Twilight gave another walk around her room and groaned again hearing the padding crinkle and saw she still had an exaggerated waddle. Twilight couldn’t help but stomp a hoof with agitation and roared, “it’s invisible! But it still makes noise, and I look like something is up my rump!”

Twilight continued to waddle about for a little longer and squeaked as she accidentally hit Spike with the weight of her diaper sending him flying as he giggled, ”wow be careful with that rump.”

The purple mare turned around at Spike with an angry glare as she shouted, ”instead of making fun of me how about help me think of a way to make me have a good excuse for this crinkling and to make sure my diaper doesn’t hit other ponies!” This made the young dragon stepped back with a sheepish smile still unable to contain the fact. Twilight the earnest student of celestia looked like a padded toddler having a temper tantrum.

The baby dragon tapped a claw to his chin and asked, “so what about we also make you wear a dress or a skirt? That will make it easier to see as the fabric will be around the diaper, and it’ll make an excuse for the rustling.”

Twilight beamed a smile and bounced over hugging Spike as she squealed with delight, ”that’s a great idea Spike!”

She scurried over to her closet and picked out an old school filly’s uniform. It was cute with a white vest and a blue overcoat and a dark blue tie. Twilight quickly dressed then took a big blue skirt and with her magic and slowly placed it over her rump. The skirt had ruffles which spread out of her backend forming around the padding. Twilight gave a relieved smile and exclaimed, “it works Spike awesome job!”

Twilight then looked around at the clock and saw that she only had thirty minutes and squeaked, “oh dear Celestia! I’m going to be late!” She then burst from the room and down the hall and out into the streets of Canterlot.

At Celestia’s academy for gifted young unicorns. The princess was standing at the front of the classroom looking over her students with a look of fear and nervousness. Everyone of her students sat straight up and ready for the test. But it seemed that there was only one desk missing and blushed seeing Twilight wasn’t among the class. The princess continued looking for Twilight and sighed, “oh dear did she wake up?”

But she sighed in relief as Twilight burst through the doors in the back of the room wearing a cute school uniform despite the fact they didn't need to wear one today. But Celestia shrugged and just watched as her favorite student waddled to her se...waddled? The princess blinked seeing Twilight waddling into the classroom with something seeming to bump into her students. The young mare squeaked out apologizes appearing to be quite nervous and aware that something wasn’t right. Twilight gulped as she sat on to her chair making it fly up and crinkle as the mare blushed hard trying to brush the skirt down. Celestia shrugged assuming it was the skirt and started handing out papers for the test. The princess continued to instruct her students. “Now you all know the rules for the final exam of the school year. Everypony must have their test finished and have every answer filled out before you can leave the room, that also includes bathroom breaks.”

Twilight's ears went behind her head when she heard that and squeaked as Celestia made sure each student had a test in front of them. Once every test was handed out Princess Celestia walked up to her front desk and looked back at her students and exclaimed, “now, unless you have any questions, begin!”

At that everypony started their test and Celestia watched closely seeing that Twilight was nervous the entire time. But shrugged as she knew the mare had a bad case of test anxiety. Celestia watched as she seemed to shift about and gulped and saw sweat pouring down her face. The princess then heard more rustling and crinkling, and it all hit Celestia like a truck… Twilight is still wearing a diaper!

The princess was now nervously sweating unsure of what to do. Despite she and Twilight having a relationship, the princess couldn’t just have the mare leave the class knowing it would be an automatic failure. But what was going through her mind was why she would keep a diaper on? Did something happened when she changed Twilight last night?”

Twilight continued to write down the test answers, but Celestia noticed the mare ‘s face was flushed red as she kicked about looking queasy. The princess blushed and could only hope Twilight can hold her pee in. But she gasped seeing Twilight looking around with a nervous whimper as a queer hissing sound flooded the room.

Everypony looked up and around but trying to figure out where the odd sound was coming from as Twilight’s ears drooped and she bent down to look at her test shaking all over. Celestia instantly exclaimed, ”oh uh don’t worry about that it’s the pipes. They are quite old as you know.”

Most of the students shrugged at the answer and Twilight looked up at Celestia with a relieved smile on her face and continued to finish the test with a slight blush. Celestia sat back at her desk waiting patiently hoping that she could take Twilight somewhere private to get the diaper off her rump.

As each student slowly finished their tests and placed them on Celestia’s desk. Twilight waddled up to the desk with her face now a deep red as an odd squelch came from her. Celestia waited patiently as Twilight got to her desk and asked, ”hello Twilight I’m guessing another hundred?”

The purple unicorn gave a nod and exclaimed, “yep! As you can see every question is visible.”

As she placed the test down the diaper suddenly appeared around Twilight’s rump with the silvery crescent moon printed on her rump. The rest of the class gasped and giggled seeing Twilight Celestia’s favourite student was now showing off her thick diaper now slightly stained yellow in front of all of them. The embarrassed student turned around feeling the burning gazes of dozens of ponies and looked down at the diaper, with its thick padding with the cute purple fading stars now revealed itself to the world. Twilight was speechless quivering with anxiety unsure of what to say or do being too embarrassed to say or anything. Celestia with a sudden thought coming to her mind she got up quickly and exclaimed dramatically, ”oh wow Twilight is that apart of your final project due tomorrow!”

Twilight gulped as she pressed her legs together making her diaper squelch as she stammered, “y...y...yeah! I um...uh was studying the..um chemical compound Sodium Polyacrylate which is most common absorbent material in foal diapers!”

The class was a bit stunned as Twilight still shaking with her diaper crinkling the mare continued the silly lie. “Yes, and I was studying the science of diapers last night and well...I forgot about my experiment...so um...yeah!”

Many of the class applauded with smirks on their faces. Celestia got up and squeaked,”now, if you excuse us I need to talk to Twilight about her odd project.” The princess then scurried her student out of the room as Twilight waddled away as quickly as possible with her diaper squelching as she cried, “my life is ruined!”

Back in Celestia's study at the academy Twilight was lying down on her back in front of the princess. Celestia legs up in the air with an angry look on her face as Twilight already told her all about the diaper and it’s magic. The princess gulped as she was getting out a stash of adult foal supplies she conjured up and whispered,”I’m...so sorry Twilight if I knew that about the diapers I would have never changed you last night.”

Twilight was now the one embarrassed as she looked squarely at the princess and exclaimed, “you were the one who changed me last night!”

Celestia with a light blush squeaked, ”yes...I couldn’t just leave you in a soaked diaper…” The mare then slowly untapped the tabs from the diaper. Twilight just looked back up at the ceiling and complained, “well what do I have to do now? My whole project was on Starswirl the Bearded! Not bucking diapers!”

Princess Celestia continued to clean the mare’s rump carefully with foal wipes. The princess watched as Twilight fidgeted about with the wipes being quite cold; then, slowly slid the sodden diaper from her student’s rump as she explained, ”well considering the circumstances and that this whole thing is partly my fault. I think I’ll help you with the project.”

Twilight was stunned unable to even shiver at the cold touch of the wipes as her heart stopped in her chest. Studying with Princess Celestia? It was a dream come true! Despite the fact it would be about stupid diapers it didn’t sound too bad. She sighed, “yeah I don’t see any issues with that.”

Celestia gave a nod as she took out the foal powder and started to sprinkle Twilight’s rump and nether regions. The unicorn was a bit confused but could only sneeze as Celestia was making sure Twilight's rump was now completely powdered white. The princess of the sun cooed, “that’s wonderful to hear, we’re going to make an excellent team.” She balled up the sodden diaper carefully; and, threw it in in a pail then began taking out another diaper with her magic. This padding had her sun cutie mark printed on the seat of the diaper and she was unfolding the plastic square. Twilight watched with a horrified look and exclaimed, "Wait, Stop!”

Celestia stopped in her tracks as she saw blinked in astonishment and quickly threw it aside and apologized with a slight blush. “Sorry, guess um...I got carried away.”

Twilight slowly got up and shook her rump trying to get the powder off as she whispered, ”look, I’ll go back to my place and take a shower...” Celestia nodded and added,”I’ll go through the royal library and find books on Sodium polyacetate. But um...just stay at your place I’ll meet you there in secret.”

The student gave a nod and quickly burst through the doors and galloped full speed to her tower. Celestia looked down at the adult diaper with the sun printed on it and pondered on the reasoning behind wanting to diaper her favorite student.