Whatever it takes

"I must say." Celestia said with a confident grin. His body leaning against the edge of the large pool of warm water ad he was looking at his conquest. "You're quite the eager mare Tali."

Her body covered in soapy suds, Tali rubbed her slim and slender body over Celestia's hardening cock. "Just remember your end of the deal your highness."

"Only if you can preform well my dear eager mare." Celestia grinned with thoughts of victory. "And it'll take more than a slippery body to get me fully satisfied."

"T-then I'll just have to make you cum until you can't move." Tali declared, though her assertive face was more cute than serious looking.

While Tali tried to satisfy the lust of stallion Celestia, stallion Luna was having his own fun with the female Rune. Laying on Luna's bed, arms and legs tied and bound. Rune's head was arched back, his tongue was sticking out and his eyes were rolled to the back of his head. The only sounds she was making were faint grunts, and groans. The source of all this was much lower. At the end of the bed, Luna was hard at work, having two smaller vibrators shoved inside Rune's wet pussy, sending her body into small twitches and constant pleasure. The most painful yet pleasurable of this was the small egg shaped vibrator on Rune's sensitive clit. The constant teasing of it made it impossible for Rune to think, let alone say anything. And while all of this is going on, Luna wasn't touching Rune's body. Instead, he had a camera locked on the action.

"Keep up the good work dear mare." Luna said. "If you can last until the spell wears off without submitting to me, you win. But if you don"t..." Luna rubbed her eager, hard cock with his hoof, then gestured at the camera. "Then we'll have our fun until the spell wears off."

Rune couldn't answer but gave what looked like a nodding motion. As she was saying she would win.

"Oh you seem eager to win our little pet." Luna licked his lips in excitement. "Tell you what, if you win, we'll do a single act for you, whenever you want."

"Then bring it on." Rune said in a cocky manner, while still moaning as if she was in heat. "I'll win and when I'm through with you, you'll be gushing my cum for days!"

"Oh aren't you the eager one." Luna teased, using his magic to pull the vibrators off of Rune's body. Lining up his enlarged and pulsating cock to Rune's pussy lips, Luna smirked. "Then let us not waste time and see how much of us you can take."

"It's so big!" Tali moaned loudly as Celestia had finished fitting a little over half of his member into Tali's small and tight pussy. "How much more of it is there?!"

"Only a few more inches." Celestia said, pulling Tali towards him to give the timid and panting mare a few nibbles to the neck.

The stimulant made Tali squeal with pleasure, making her pussy wetter and more open to Celestia's cock, which slid further inwards. With a few more inches of that meaty beast pushing its way into Tali's body, Tali saw a faint bulge forming on her stomach. The very thought of Celestia cumming inside her started to terrify her. But she was determined; she had to win and get her prize. So pushing her hooves on Celestia's chest, Tali lifted herself and then biting hard, Tali slammed her body down, shoving the full length of Celestia's girth into her tight body. The head wasn't kissing her womb, it was fucking her womb. The sensation and surge of pain caused Tali to suddenly squirt her juices out, only lubricating Celestia's cock even more.

"Now we're getting somewhere." Celestia smirked, gripping his hooves on Tali's flank and slowly beginning his bucking.

"Now we're getting somewhere." Luna smirked, looking at how pitiful Rune looked.

Only a few minutes into the sex, and Rune had already came more than three times. But it was to be expected, her body was too sensitive, and Luna's cock was hitting all her sweet spots. She had to think of a plan or she would lose. Suddenly, an idea sparked in Rune's mind. Lifting her head slightly, Rune ignited her horn and blasted a small pink orb into Luna's head.

"What did you do to us?" Luna demanded to know, a tad surprised.

"Just a fun spell I learned a week ago." Rune grinned. "It targets your nervous system, and I had this one heighten on of your nerves."

"What!?" Luna said in shock then felt a sudden pulse through his body, his cock felt like it was being crushed and it was on fire.

This new impulse and pain caused Luna to immediately pull out of Rune's pussy. But rather than helping, the sudden cool air on his moist cock only strengthened the feelings and without any way to stop, Luna shot out a load of cum. The sudden feeling of her balls lifting and tightening as she released her payload was beyond words to describe. The shot fired at Rune, coating his body in the warm, sticky substance.

"What did you?" Luna asked, but then figured it out. "You heightened the sensitivity to our cock. In hopes that we would submit to this challenge?"

"That's right." Rune smirked between breaths, lighting up her horn again to break the binds on her arms and legs. "Now let's see who can out pleasure the other."

"You sneaky maiden." Luna smirked a devilish grin, grabbing his hooves on Rune's legs and without hesitation, shoved his full member into Rune's tight, burning pussy. "We...will...win..."

"So...close..." Celestia said through his teeth, using his hooves to move the light Tali up and down in quick and deep movements.

The warm, bubbly water was splashing like mad all over the two ponies. Tali's expression was becoming less and less confident as she soon was building up to a stronger orgasm. Celestia wasn't fairing any better. He regretted not being curious about what it meant to have a cock before, this new feeling was almost beyond words. The tightness and warm caress of a mare's inner walls, the denial of the womb, only to pry it open in a hard thrust, all of this was a whole new world for Celestia and he only craved more of it.

"You're a strong one." Celestia complimented Tali's efforts.  "I think you earned this."

With one more hard thrust, Celestia let out his full load of cum. Using her strength to hold down Tali's twitching and loudly moaning body, the cum quickly filled her womb, coated her inner walls a hot white, and even were leaking out small streams of cum. Tali tried to speak but the feeling was so intense and hard, that it felt as if the cum was fucking her too. She was only able to lean back, her mouth hung open and her tongue dangled the side of her mouth. Her eyes rolled to the back of her head as the last burst of Celestia's cum filled her up.

Grabbing the mare, Celestia pulled Tali to rest on his chest and Tali was instantly asleep. She had no energy left. Celestia's now softening cock soon plopped out of Tali's body; and not a moment too soon. Time was up. In a quick burst and clearing of smoke, Celestia was a mare again, and Tali had become Talon once more, still asleep, his messy and wet mane reminded Celestia as if he was a small child and cuddled him closely.

Back in Luna's chambers, the stallion lay on his back, exhausted from his contest with Rune, who was equally tired. Globs of cum gushed out of Rune's pussy with each twitch, and Luna's cock kept firing small droplets of cum with each pulse. Both ponies were about ready to pass out when they felt a strange feeling. Time was up. In the burst and clearing of smoke, Rune found he was a stallion again, and Luna was a mare again.

"Looks like it's over." Rune said between breaths.

"It would appear so." Luna concluded. "But who won?"

"I say it was a close draw." Rune suggested, not wanting to admit defeat.

"A draw?" Luna thought about it, and agreed. "Yes, we will accept the draw."

"How about a new deal?" Rune offered.

"We are listening." Luna answered.

"Send me back to my hut, and in less than ten minutes, I can grab a few potions." Rune explained. "Then send me back her, and we can switch genders again."

"You enjoyed being bucked?" Luna raised her eyebrow.

"Not particularly." Rune answered. "But, how does this sound? I become a mare again, and you take that camera to take a few pictures of me, you know, for the memory; and after that, we do this again at a different time, but you'll be the mare, and I'll be the stallion."

"So pictures of you as a mare, in exchange for you having your way with us?" Luna thought it over, normally she would say now, but the last hour of her constant sex and heightened sensitivity left her too horny to think clearly. "You have a deal, on the condition that we only do it once and we speak of it to nopony."

"Agreed." Rune said, before both he and Luna passed out.

The next day, after several long showers, Talon went to Rune's house to deliver some news.

"Rune Rune!?" Talon almost had a twinkle in his eye, bursting through the doorway. "Celestia gave me a clue to my curse! I can find a...what are you doing?!"

Upon entering the hut, Talon saw that Rune was busy, not doing anything with Zecora, who happened to be sleeping in the other room, but Rune was currently jerking off to what appeared to be pictures. Oddly, after last night, the sight of bursting into a stallion jerking off didn't freak Talon out as it normally would, he was more concerned with the photos.