Disposing of the Evidence

Panting and full of bull cum, Twilight lowered her head. She didn't know how much more she could stomach. She felt like crap, and she was sure it was going to turn worse. To her surprise, Flurry pulled off her blindfold, lifting her chin to lock eyes with her.

"How does that feel?" she asked, not bothering to remove the gag. Twilight pleaded with her eyes to end this here and now. "Are you ever going to undermine one of our agreements again?" Twilight shook her head frantically. "Good." Flurry walked behind Twilight. "In that case, I'll go easy on you. I'll give you half an hour to stew, alone with your own thoughts. This will count among your twelve hours, so you won't be pausing your time while I'm out."

The barn door opened and closed, and Twilight heard the lock click into place. She didn't know if there were any animals still waiting behind her, but at least she didn't have to worry about other ponies walking in on her. She could rest easy, at least for a little while, knowing that she was mostly safe. At worst, Fluttershy could ask the animals what happened and put things together, but surely she would understand if she told her that she knew nothing about it until it was happening, and didn't have a choice in the matter. Fluttershy was her friend. She wouldn't abandon her, right?

The smell was starting to disturb her. Over the time that had elapsed thus far, she'd had bigger problems to worry about, but now that things had calmed down, she was made aware that the smell of the animals and Flurry had been drowning out the feces that had been permeating the air around her. What's worse, because her mouth was forced open, she could almost taste it.

The only way to keep the taste off her tongue was to look down and breathe out through her mouth, which only served to dehydrate her quickly. The salt water in her anus seemed to be drying her out, too. She needed to rehydrate, and she couldn't do that on her own anymore. No hands, no magic, and no ability to call out to Flurry for water. She would just have to wait. She wondered what was taking Flurry so long.

After what felt like two hours, The barn door was unlocked and slid open. "I'm back," called Flurry. "Did you have fun while I was out?"

"Ngoh, hichhechh," answered Twilight.

"Well, then this will be good news," replied Flurry. "While I was out, I met a new friend who wanted to meet you. I couldn't say no to him, and right now, neither can you."

Twilight's eyes shot open, and she shifted in her bonds, vainly attempting to look behind her. She hoped that her shifting in her bonds would send up a red flag for whomever was looking at her exposed, dripping fanny. She then felt a finger running between her labia, testing the moisture level. It was sticky at the top, but the parts that were coated more heavily were still fairly slick. She felt the hands come back, spreading her used cunny as wide as it would go without breaking anything.

"You're about ready for him," confirmed Flurry, smacking Twilight's arse. "I'm just going to cast a quick spell on you." Twilight felt the light tingling of magic on her abdomen, then it stopped. "That should do it. Now, just let me prepare him."

After a few seconds, Twilight could hear a mild slurping sound, followed by a moan from her niece. It was muffled, as if her mouth was full. Was she sucking off a stallion before he would mount her? At the very least, she was grateful for the extra lubrication, but an introduction would have been better. She would have been made more comfortable, given everything that had happened today. Perhaps he would have even been good enough to let her control the pace.

The sucking noise stopped, and the snare that held her down shifted again under the weight. Whoever this was, he was big. The frame began to creak, which made her think he was bigger than the ox. Again, she began to panic when the head of his cock pressed against her vagina. With a good, solid push, he shoved the whole thing inside of her. It was a stallion, alright, but this was no pony. This was a full-sized horse. She could feel his flare all the way up in her chest, well beyond how far her vagina reached.

"I rubberized your insides," explained Flurry. "You're now really stretchy, but without losing any of your tightness. Aren't I just the living end?"

The horse began to thrust, the head of his penis pressing hard on her diaphragm, essentially forcing her to exhale on every thrust. The rig that held her in place made snapping and groaning sounds, to the point where Twilight feared that it would break, and he'd come down on top of her, crushing her under the weight of his chest.

The strange thing was, she was starting to like it. None of the other animals had been particularly pleasing to her, but this monstrous dick was designed to work a pussy like hers. Granted, he was supposed to be in something a lot larger, but the shape was just what she needed. She began to moan out in pleasure, closing her eyes and imagining it was a version of her brother that was much larger.

"Are you enjoying yourself, Auntie?" teased Flurry, hoping to embarrass her. "Are you enjoying being a fucktoy?"

"Yech, hichhechh!" shouted Twilight, her tongue hanging out through her gag. While the idea was unbecoming and the pain wracking her was a challenge of endurance, there was a tiny spark of pleasure building inside of her, and as that was the only good to be found in this moment, she focused on it, letting it wash over her as she pushed everything else out of her mind.

While Flurry was disappointed that her punishment was not so punishing anymore, she couldn't help but smile. After this was over, she would have a new mare to do anything she wanted to. She would practically be able to rule over all of Equestria, being praised for all of the beneficial decisions, and not having to take the heat if things went bad.

As the horse filled her to bursting, stretching out her abdomen like a balloon, Twilight climaxed, squeezing and milking him for all he had. As she lay panting, exhausted and dehydrated, she heard a click just before passing out.