Stuck Like Glue [Scat]

Six Hours Later…

Celestia moaned and whined as she and Luna walked down to Celestia’s chambers. Her big, round belly jiggled and wobbled as she walked, all while Luna giggled and teased her. “Well dearest sister, it is not Our fault that thou must act like such a porcine.”

“Ugh, please Luna, I’m not feeling up to your sense of humor right now. My stomach has been acting very strange recently; and I don’t mean how big it is. I’m quite aware of that fact.” As Celestia fiddled with her door, she could feel the massive quantity of food she had eaten churn and writhe within her.

Luna turned around and stuck her rump out at Celestia. Heartily laughing, Luna bumped her hindquarters against her sister’s, chanting, “Pig-lestia, Pig-lestia, Pig-lestia!”

“Luna, would you please-”

Suddenly, a blinding flash of light filled the hallway and disoriented the princesses. Celestia rubbed her eyes, trying to clear her vision. Feeling a strange sensation on her asshole, Celestia turned around and gasped.

Luna, with hind hooves lightly suspended from the floor, was joined to her sister in one of the most embarrassing ways possible. Between their thick, pudgy plots, they were conjoined to each other’s anuses.

Before they could even fully grasp the situation, familiar cackling filled the air. With a puff of smoke Discord appeared as if from the ether in front of the princess. His cackling mellowed into a devious chuckle as he admired the pickle Luna and Celestia found themselves in. “Ah, my two favorite tyrants. It seems you’ve found yourself in a sticky situation?”

“DISCORD!” yelled both of the princesses.

“Thou art the one behind this transgression?” Luna asked furiously.

Discord chuckled to himself, “Why, yes. I think this might be one of my favorite pranks yet.” Luna jumped at Discord, forgetting both her magic and her conjoinment to her sister from her fury, dragging Celestia along with her in her short lived pounce-turned tumble to the ground.

“Seriously Discord?” asked Celestia, “This is your favorite prank? Just… fusing our posteriors together? That seems quite banal.”

Discord let out a hearty laugh, “That’s because the prank isn’t finished yet, my darling. And believe me, that stomach problem of yours? It’s going to get much, much worse before it gets better.”

Celestia snapped, “And just what do you mean by that?”

Discord let out another devious chuckle and snapped his paw’s fingers, immediately disappearing back into the ether with another cloud of smoke.

Luna craned her neck to look at Celestia, “Dearest sister? What does thou think he meant with his mad ramblings?”

Celestia sighed, “I don’t know, Luna, maybe he-” Celestia stopped as her stomach piped into the conversation. It sounded like Celestia’s stomach contained a drowning lion as it gurgled and groaned with ferocious intensity. Both sisters were awestruck by how long Celestia’s bloated stomach filled the air with its thick, wet cacophony.

In a brief moment of quiet between roars, Luna looked back to her sister, “Sister? Was Discord near you when you were procuring your food earlier?”

Celestia’s stomach started to rumble again, and with labored grunts Celestia said, “Actually, Luna, yes he was, why do you ask…?” Celestia’s speech drifted off as she realized what Discord’s true prank really was.

A sudden pang of intense pain surged throughout Celestia’s intestines as she connected the dots. “Don’t tell me he…”

“Oh, he better not have.”

“I think he actually did put a- oooooohhh.” Celestia winced in pain as she felt her guts shift and the pressure become much more… solid.

Luna’s eyes went wider than dinner plates as she felt a long, wet blast of air enter her rectum from their shared hole. As she felt her stomach inflate from Celestia’s gas, she turned to her and asked, “Sister? What just… entered me?”

Celestia, in much pain, could barely manage an “Ummmm.”

“Uhhh,” Luna chimed in, “Do not tell me that you just-”

Practically crowning, Celestia interrupted her sister, “MM-HMM.” Celestia clenched their shared asshole, trying to keep her side in. Dejectedly, Celestia moaned, “I’m sorry Luna, I can feel it coming.”

Upon hearing this, Luna went frantic. “Please dearest sister, I beseech thee! Hold it in! For the love of all that is harmonious in Equestria, HOLD IT IN!”

Luna’s terrified begging could only do so much, however. Celestia’s labored breathing and constant tottering showed she didn’t have much time left, and with their situation, it was only delaying the inevitable.

Celestia squatted down to where Luna’s hindhoofs touched the floor again. Luna fruitlessly tried to pull herself away from her sister, only to find that Celestia’s weight practically anchored them in place. “It hurts too much, I can’t hold it anymore. Oh Great Old Ones, Luna, I’m sorry,” Celestia choked out as her eyes welled up. “I’m so fucking sorry.”

Luna’s mind melted as she felt her sister’s fecal dam burst. Immediately, a torrent of Celestia’s pasty shit exploded into Luna’s ass, filling her ass with the digested remnants of Celestia’s afternoon feast. Luna felt a hitherto unknown feeling of nausea as she felt her own intestines fill with her sister’s waste.

The intense flood of shit raced through Luna’s guts until it started pouring into her stomach. As Celestia’s hyper dump continued, Luna could feel her belly stretching and expanding to accommodate the incoming mass. Luna choked out,“Please sister, stop. Hah, hah, y-you’re filling me up!”

Celestia cried out in mid involuntary push, “I’m so sorry Lunnaaaaaa! I can’t stop!” Celestia’s colossal mudslide continued despite the objections of the princesses. Luna felt sick as she could feel gallon after gallon of her sister’s mushy waste pile in her rapidly expanding stomach.

After an excruciating hour of being forced to be used as her sister’s living chamber pot, Luna’s senses finally started to come back to her. In horror, she looked down and saw that her stomach had grown as big as her sister’s once was, plus whatever she herself ate earlier. Luna panted, “Is it… over?”

Celestia, similarly winded replied, “Yes, dear sister, I think so.” She looked back and saw her newly bloated sister dejectedly looking upon her form. “Luna… I’m so sorry.”

Luna sighed, “Hold thy tongue, sister. It isn’t thou who needeth apologize for this. It’s that rabid curr Discord who shall atone for his sins.”

“Well, revenge can wait for now, Luna. We’re not exactly capable of fighting in a state like this. Let’s just… get some rest; and tomorrow we’ll work on fixing our conjoinment first.”

Luna at first tried to make for her own chambers before remembering, “Oh. Right.” The two princesses entered Celestia’s opulent chambers. Celestia laid down as close to normally as she could, having to leave her butt hanging as Luna stood. With how big her belly was and how much it hurt to maneuver, Luna eventually just took the easy route. Flopping down onto Celestia’s silken bed, Luna let out a stifled groan of nausea.

‘I know how bad it feels, Luna. Just… try to get some sleep; and we’ll find a solution to this tomorrow.” Luna shuffled and set her head on her hooves.

“Goodnight, Luna. I love you.”

“We love thee too, dearest sister.”