"It's going to be me, isn't it?" Twilight said.

"Of course!" Rarity answered, crossing her arms over her bare chest. "This whole thing was your idea. And there is no way that I am going to impale myself on that." She pointed at Celestia's cock, which was looming ominously. "It would kill me!"

"Fine! I'll have sex with Celestia, then!" Twilight said. She looked at the penis again. I think I might need some help... uh... getting on, though. How exactly should I go about this?"

"That's a good question." Rarity stroked her chin. "Especially given that she isn't going to be able to support herself. I believe that the cowgirl position would be the simplest and most effective option."

"The what?"

Rarity sighed. "Just help me get her onto a bed, and I'll explain from there."

"Okay, now let her go!"

Twilight and Rarity released Princess Celestia, and she flopped down on Twilight's bed, her erect cock pointing at the ceiling like an erotic ring toss. Her legs were spread wide, but her pussy was completely hidden beneath her enormous balls. Her breasts rose and fell as she breathed.

"Now what?" Twilight asked. "We doing that cow thing you mentioned?"

"Ah, yes, the cowgirl position," Rarity cleared her throat. "Are you sure you want to attempt... that?" She eyed Celestia's penis. One would have just as much difficulty trying to fuck an obelisk. "It could be dangerous."

"If it's the only way to wake her up, I have to!" Twilight said. She was feeling a mix of apprehension and excitement. Her brief experience with Applejack had proven to her that a real cock beat one made of plastic or rubber any day, no matter how strongly it could vibrate. But even so, the sheer size was rather intimidating.

"Alright, then," Rarity said. "Get on the bed."

Twilight stepped carefully on to the mattress. It creaked a little under their combined weight, but for the most part it held up. "What should I do?" she asked.

"Well, first of all, make sure that Celestia is lubed up, or else you might get stuck." She tossed Twilight a bottle. "I can't imagine how we could possibly explain our situation should we require assistance to remove you."

"Duly noted," Twilight said as she greased up Celestia's meat missile.

"Now, You'll need to put your feet here and here," Rarity motioned Twilight into place. She stood over Celestia, with one foot on either side of the princess's hips. She shuffled forward so that she was standing directly over Celestia's cock. It was so huge that it reached all the way up to Twilight's knees. "I believe this position will offer several advantages," Rarity continued. "First of all, it gives you the best possible view. I'm sure that once you get moving you'll appreciate it." She nodded at Celestia's boobs and bounced her own chest up and down.

Twilight nodded. "And?"

"And when she finally... you know, you'll be in a prime position to get yourself off of her penis. Let's face it, there is a very real possibility that her... ejaculate will be quite plentiful. Enough to cause problems."

"You think that her load is going to be big enough to injure me?!" Twilight asked incredulously.

"Her dick certainly is."

"Good point. Now what?"

"Crouch down and try not to impale yourself." Rarity shrugged. "Not much else to it. You'll have to do all the moving, though. She's not going to be doing much."

Twilight nodded and slowly lowered herself onto Celestia's cock. She shivered in anticipation as she felt the massive dick head press against her labia. It was so soft and squishy. Slippery, too. She couldn't tell whether it was from the lube or from precum. She gently put her fingers around it and began to attempt to slide it into herself, holding her own cock out of the way with her other hand. For a moment she feared that it simply wouldn't work. Then there was a wet squish and the head of Celestia's cock disappeared into her vagina.

"Good, good." Rarity said, nodding. "Now see how far down you can go."

Twilight followed the instruction, wriggling her hips back and forth in an effort to get more of Celestia's massive schlong inside her. Her heart pounded. She had experimented with plus-sized dildos before, but this was by far the largest thing that she had ever attempted to insert. It didn't hurt, but she could feel the pressure throbbing against the inside of her pussy. "I don't think it'll go in any further," she said.

"I think you're right," Rarity said. Twilight had done admirably; only about a third of Celestia' shaft remain visible. Rarity couldn't help but notice that Twilight seemed to be enjoying the experience. Twilight's cock, which had begun to deflate, was now standing at attention. "Now just start bouncing. Just a little. Then you can start going faster as feel ready."

Twilight nodded, and began to slide up and down. She rocked back and forth on her feet just enough to set her penis bouncing. Her nutsack swung back and forth, brushing against the shaft of Celestia's cock. It was hypnotic. Everything on both Twilight and Celestia was bouncing. Twilight's small, perky breasts jiggled magnificently as she ground her crotch against Celestia. The Princess's own massive tits wobbled back and forth, begging for someone to motorboat her.

And then there were the dicks. Twilight's flopped about wildly, slapping wetly against her stomach and splattering precum all over Celestia's chest. It glistened. Rarity had to wonder if Twilight would manage to bring Celestia to climax before she came herself.

"Enjoying the show?" Twilight gasped between humps.

"What are you talking about?!" Rarity asked, flushing slightly at the suggestion that she was somehow getting off on the scene before her.

Twilight just laughed. "Oh come on! Look where your hand is!"

"Huh?" Rarity looked down and found that her hand had seemingly taken on a life of its own and crept into her panties. Even now her fingers were knuckle-deep in her pussy, swirling around. Her other had was toying restlessly with her nipple. "Oh." She blushed even harder. "You try watching two reasonably attractive people have sex without getting a bit aroused."

Twilight giggled. "You mean you start to diddle yourself whenever you get aroused? I'm surprised that you haven't gotten yourself arrested."

"Do you really think me such a fool and exhibitionist that I would pleasure myself in public?" She glowered at Twilight, but didn't remove her hand from her crotch. "I do have a sense of restraint. I just failed to realize that apparently your bedroom is a public place."

"You just didn't seem like the type to masturbate in front of someone else," Twilight said. She tried to shrug, but shrugging and fucking at the same time proved too difficult. "You can borrow one of my dildos if you want."

"I'll be just fine with my fingers, thank you," Rarity mumbled. "How is it...uh... going?"

"I think she's almost there!" Twilight answered. "She's as hard as she's ever been, and I'm pretty sure that she's been oozing."

Rarity inspected Twilight's thighs. They were slick with excretions. "Good, good. How much longer do you think it'll take?"

"Hopefully, not long. My legs are starting to get tired. We need to finish this off quickly. Why don't you go behind me and work her nuts a little."

"I suppose I might as well," Rarity said with a sigh. She knelt on the floor at the bottom of the bed. Luckily enough, she didn't have to even go so far as to remove her hand from her crotch in order to reach Celestia's nutsack. She gently squeezed and kneaded the Princess's testicles. They were full, ready to burst. When they did, Rarity imagined that Twilight might inflate like a balloon. She squeezed harder, as if she could squeeze the cum from Celestia's balls.

The sensation was quite soothing; almost like fondling a squishy, cum-filled stress ball. So warm, so soft, so smooth, but just firm enough to be satisfying. Rarity had never had testicles, but she had and they had been anything like Celestia's, she would probably have spent quite a bit of time playing with them. She shook her head. For a moment she had almost wanted to have testicles! What an absurd notion. She was, had always been, and always would be a lady. She had no need for testicles. Even if they were oodles of fun to grope at.

She cupped the hand in her panties around where she imagined that her balls would be if she had them. Not to say that she wanted them; that was just silly. But if, hypothetically speaking, she would have balls, she imagined what they might feel like. It was a pity Celestia only had one pair. Though on the flipside if Celestia had four testicles, it would be more than a little weird. A thought struck her. There was another pair of balls available.

Twilight had her own ballsack. They weren't nearly as smooth or full as Celestia's. Twilight's were a bit more dangly, like her sack had some space to spare. Not that that was a bad thing, Rarity thought. It gave her a bit more to play with. And it wasn't like Twilight was going to complain at this point.

Rarity lunged forward, whipping her hand from her panties and reaching around Twilight. It found Twilight's nutsack, and all in a moment, Rarity had squished, shaken, and squeezed.

"Ra-ah-AHH!" Twilight started to gasp Rarity's name, but the sudden stimulation overtook her. A fountain of semen erupted from her cock, spraying in long, sticky strands over Celestia's chest. The first shot reached all the way to Celestia's lips. Twilight's dick continued to pump as Rarity groped her testicles. Just as the orgasm started to subside, a new sensation exploded between her legs.

The orgasmic contractions in Twilight's pussy had been the key. A tremor ran through Celestia's body, and her cock seemed to burst. Twilight groaned in pleasure as she felt the princess pour blast after blast of sperm into her. It only took seconds before her vagina could no longer contain it. The cum gushed out from around Celestia's cock, pouring in streams down the shaft. Twilight rocked back and forth in ecstasy as she let Celestia fill her.

"W-wow!" she gasped as her senses returned. "T-that was amazing!"

"Mmph," Rarity answered. Between her lunge forward and Twilight's sudden rocking, her face had wedged between Twilight's butt cheeks. She pulled her face free. "Yes, that was quite something." She felt a bit miffed. Both of her hands had been occupied, and as a result, she hadn't had a chance to share in the orgasm. "Why don't you get yourself off of Celestia's penis and see if we succeeded.

"Oh, right." Twilight steadied herself and slowly stood up, carefully sliding Celestia's ejaculate-drenched cock out of herself. "There we go!" Celestia's dick popped free, and flopped limply against her stomach. A final dribble of cum oozed out.

"Well?"

"Ugh... just a second." Twilight put a hand on her abdomen, just above her slit. She slowly put two fingers between her labia and spread her pussy. A huge splash of cum poured out, landing on Celestia with a splat. "Whew, much better."

Rarity stared at the scene before her. It looked like Twilight and Celestia had been attacked by a barrage of cum-filled water balloons. "So, did it work?"

"Uh..." Twilight glanced at Celestia. The princess was beginning to stir, mumbling and grumbling to herself like someone waking up from a nap. She licked her lips and swallowed.

Twilight and Rarity shared a look as they realized the step in the plan that they had overlooked.

"So," Rarity said, "do you want to try to explain this to her?"

Author's Note

Yeah yeah I took fucking forever to write this at least I got it here.