A long awaited day. Today is the day, three long days of waiting. It's hard to be patient when you're so very excited about something. Three days ago i decided to try something much more different than normal, I wanted to just eat and eat. At least I spent all that energy at the park the first day with other pokemon. The second day i romped around the yard with Phillip, my owner and my friend. Both days were decently beautiful to be outside with dew resting on the grass in the morning. One day had a breeze and was hot while the other was just hot and humid. I could spray myself and Phil with water when we over heated, so the humidity wasn't so bad... in a way. I haven't used the bathroom in two days on purpose, and that was the only problem. When it's hot and humid out, it makes the load your carrying in your bowls harder to hold. Everything you do is just harder because of the heat. Luckily our home is very cool inside, and there's a favorite tree of mine, perfect to relax under and hide fromthe heat. Thursday was here, I know when Thursday comes around because Phil complains about having to work a little later. I was laying in the sunlight, on the floor, that was spilling in from a window. The sunlight was very relaxing and I started to daydream about how three weeks ago i had eaten something that didn't make my stomach the happiest. I wasn't feeling good all morning when a led weight hit out of nowhere. I was able to get up but could barely walk. There was two minutes of me trying my best to hold my shit in, to walk out the dog door and shit in the lawn. Trying my best.... wasn't good enough, I ended up making a mess all over the kitchen tile floor. I was able to clean it up so Phil never knew better. With my water powers, this thing Phil calls a "dust pan", and some paper towels, the floor cleaned up smoothly. The thing was that the extreme pressure, the absolute need for release, and then my body just succumbing to it.. was... exciting. Laying here in the sun wasn't just to relax, the gentile heat helped me hold in my load a bit. Laying on my back so there's no pressure on my belly is just a plus. It was hard to hold yesterday, the heat was taking strength out of me. Luckily only gas and a lot of it. Each fart was a relief on my body, however over eating for today didn't help. The pressure wasn't too intense, but persistent. The kind of pressure you have to keep aware and control of, or bad things would happen. Phil was done getting ready for work when he leaned to down to rub my belly. "Behave yourself and at least stay in the yard. Don't tire yourself to much in the heat ok. I'll be home later than normal today." The belly rub surprised me, I had almost fallen asleep. Phil pushed out a fart in that rub, a short dry one that was too quiet for him to notice. I jumped up and rubbed his leg as he was leaving. Getting up so quickly caused my belly to rumble at me, and as Phil shut the door I had to leave out another deeper dry fart. I swear i felt my belly shrink on that one, causing me to sigh, but the pressure remained. I hadn't eaten anything yet so i had some breakfast and drank some water. I went outside to enjoy the feeling of cool dew on my paws as i went for my early morning piss. Getting ready to pee made my anus want to open and unload my waist, the insistence increased as I stood in my spot. It was tricky to push on my bladder and not push out my bowels. My anus kept widening thinking emptying time has come. "No no no. It's not time yet. Just going to pee to make more room." After a bit I was able to pee and I could feel my bladder slowly emptying to make room for my packed bowels, the shrinking of my bladder felt great. With more room to grumble about, something moved in my stomach. I shrugged it off and went to lay in the sunlight inside. I soon fell asleep on my back after another stomach grumble and a long fart. I woke up later with the sun high in the sky. I could feel how much hotter the sun got through the window. More importantly, i could feel what wanted to come out. I had to go so bad that i started to shiver in place. "Oh wow. I need to get up carefully." I rolled over and stood up, the standing brought upon even more pressure. I farted and that seemed helped a little, but the need to clench is being a constant now. I walked around the room a bit expecting to calm down. Nothing but more farting, all of them short and each one being more fowl smelling than the last. Each one making me realize that this was going to happen before Phil got home. I got really excited for a spilt second or two that i didn't clench and my anus started to bulge. "Ahhhaa... mngg... no no. I got this. It's not that bad yet." In preparation for what's to come I hopped on the couch to grab my favorite, long round pillow, from on top the back rest. The jump up was a bad idea, that caused a weight to shift in me. I had to cross my legs and concentrate without moving to hold on. "Mnnnggggg" After a couple of seconds my body went back to its normal pressure so I grabbed the pillow and tossed it down. When I jumped down the pressure rose again and i had to cross and concentrate. I let out a sigh and had to drag the pillow to face my doggie door in the kitchen. The pillow has the perfect kind of stiffness to it for what I intended. The jump down had shifted my gut even more so i had to stop every couple of seconds and struggle. I walked around the house more, did some light hoping to increase the pressure and tease myself. "Oh man.. i can feel the pressure mounting after every couple of hops. I have to clench so hard it makes me tremble." After each struggle was some deep breathing and walking, followed by another couple of hops, the struggle, and panting. Vesta loved the struggle she was fighting. "I feel so full. Like a heavy weight is bouncing against my anus." It sent tingles through her anus and up her spine. On one clench she closed her eyes and stumbled over her own paws. Vesta landed on her belly, not hard and she caught most of the fall, but it was enough. Vesta shot straight up and clenched with the increased pressure. She trembled, and crossing her legs weren't helping. She waved her butt side to side, but her poop pushed on. Vistas anus was bulging badly, and so not to lose her wavering control she sat down. Vesta danced her front paws while sitting. "Oh no.. I didn't'..mnnng do.. all this work...mnnnnggg for nothing. T-this is no-ot happening yet." The emergency subsided in time, Vesta knew it was time to push her body's limits the best way possible. She walked slowly to the pillow and put her front paws around it and her belly over it, she slowly lowered her belly onto the pillow. The pressure on her belly wasn't too strong, but she hugged the pillow and wiggled as her body fought. Vesta switched from crossing her legs to hoping her paws back and forth to hold her waist in. Vesta concentrated on the feeling of her full tummy pushing on the pillow, on the strain her anus is enduring, on her body trembling. She whined and grunted, it all felt so wonderful to her. She lowered herself more, and more pressure caused more strain, which cause her paws to dance faster, then bounce up and down. She pushed into the pillow and felt her anus start to open. The feeling of her anus being forced open, with her belly so heavy and full sent tingles of pleasure through her. Vesta, quickly and carefully, got off the pillow. "N-n-n-ot yet mnggggg.... OOoooo... not yet.. come on, come on. Just a little longer." Vesta had to dance around rapidly to regain control, control that didn't come easily at all. She had perfect view of the lawn through the dog door. Being so close to her toilet, just looking at it was a massive tease. Vesta could walk outside right now and squat down to feel the slither of waist leave her, feel her bowls empty when she chose to. Vista whined... the thought was tantalizing. The poor vaporeon was so desperate to poop she almost gave in to that desire. Vista half hunched over, crouched, and shook her butt side to side. It worked, her tired anus pulled itself shut again and Vista let out a small sigh. Vista looked to the door again, dancing and squirming on the spot. This was the deciding point, either relief now or push her body further. Vesta climbed back onto the pillow, her back legs bouncing rapidly. Being so desperate to go, Vista took a big breath and laid herself back on the cushion. Her back legs bouncing increased as the pillow pushed in. "Ooooooo.....It's like a hand is pushing down on me from the inside!" Her anus was opening itself again, the poop making its way to the exit. "oh my god... oh my god..." With more than half of her body on the pillow, her body crouched as much as it could, forcing more pressure onto the pillow, causing her tail to raise. She switched from bouncing to just shaking her butt side to side and grunting. Vista looked at the door again. "I could've went outside. I can't even get off this pillow without spilling out now." Vista had to stop wiggling as that was just making it worse. "UUUnngggggg.. i have to gooo." she moaned. If Vista could've gotten up and ran outside she would've, she was so desperate to poop. Vista could feel her waist moving toward freedom. "Oh no.. it's moving. Here it comes, here it comes." She crossed her legs and gripped the pillow for control, but it was no use, her bowels were giving up. Vista could feel the tip of the log brush just past her anus. "I have to poop.. I have to poop.. Oh my god.. i have to go... I can't hold it anymore.... I'm going to poop.. I'm going to shit the floor!" With her legs tightly crossed and trembling, Vista let out a long whine as it was inching out and she lost all control. Her shit flew out of her at first, making a large splattering pile. Vistas body was shaking with the relief as she could feel her belly emptying. Her poop slowed from flowing out of her. She trembled with all that waste slithering past her sensitive, tired, anus. It all felt like heaven as she laid there trembling and panting heavily in near orgasmic bliss.