Author's Notes:

Thanks for the warm reception so far!

Be sure to let me know what you guys think. In particular, of Twilight's characterization.

You watch from the corner of the throne room as Princess Twilight and the Knights of Harmony conclude the day's business. Nothing too world-shaking, much to your delight (though Rainbow Dash's boredom). You find yourself grateful that you aren't dating her, if only because her need to constantly put herself in harm's way would grey your mane in record time.

This isn't the first time you've thought about the knights in such a manner. You aren't exactly proud of it, and you would never act on it, but the knights are all lovely mares, in their own ways. But none quite do it for you. Applejack is a fellow earth pony, the most dependable and constant soul you've ever known, and with buns that won't quit. But you suspect being with her would involve long days of hard labor, somehow. And you doubt you could get in as much... intimacy, with her family living in the same roof.

Rarity is a generous mare, make no mistake, and has a justified reputation as being the town's looker. But she's... too high maintenance. Fluttershy is pretty, and would probably make a good significant other if she didn't faint the first time you asked her out... but you aren't that much of an animal person. And Pinkie... well, she's Pinkie.

You shove all those thoughts aside, berating yourself. No, there's only one mare for you. Unless she decides to get really experimental...

Twilight calls it a day, and the knights take their leave of her, giving you polite farewells as they do. To be honest, you aren't paying an incredible amount of attention, because something else has caught your eye. Specifically, your marefriend's breasts, and how this particular dress of hers serves to highlight every desirable aspect in them.

Oh Twilight's titties, how I love thee. Shall I count the ways? Soft, large, round, smooth, supple, pert, perky, pillowy... Yeah, you are not a master poet.

"Can I help you?" Twi's voice breaks you out of your daydream, and you realize you've probably been staring at her chest this whole time. She looks more bemused than anything, which you figure is a good sign.

"Well, I was thinking. Last week you got a big piece of me, and seemed to enjoy it quite a bit. Well, seeing you do your princess routine, ordering ponies about, got me horny, and I think it's time I got some super-sized action."

Several of the servants snicker; it isn't for nothing you've earned the honorary title of "the Royal Consort" amongst the castle staff. A rather tame moniker, considering what they could call you. Twilight blushes, and claps her hands. "Alright, everypony out. Except for you," she says, and the servants file out. Violet magic closes and seals the door to the throne room, leaving the two of you alone. She glares at you in mock-crossness. "I have my dignity to uphold," she says in that cute, pouty manner of hers.

"Yeah, yeah," you snark, "so, what I was thinking is...." you whisper your idea into her ear, and she blushes in that cute way of hers.

"Well, that's certainly doable," she says, "and I think... I think I might enjoy it. You certainly know how to make the girls feel good. But on one condition." She plops right down on her throne. "We do it right here."

You sit on her lap, straddling her legs. "Going on a power trip, eh, Most Beneficent One?" She gets so annoyed when you call her that.

"Silence, peasant," she says, in a faux old-Canterlot accent. "You are commanded by your princess to tend to the Great and Ever-expanding Royal Lactose Reservoirs!" Her wings fan out behind her, giving her an aura that could be regal if it weren't so evocative.

With that, she casts her spell on her breasts. It has no immediate effect; just like you wanted it. Smiling, you unlace the front of her bodice, and gently ease it down. Twi's bare breasts are now in full view, a slight glow to them hinting at their current enchanted state, and calling on you to start fondling them.

You reach forth eagerly, and gently grab the purple orbs. Twi sighs as you begin to fondle them, gently passing your fingertips over their smooth, soft surface. You alternate between moving your fingers inward close towards her nipples, then out away from them. Occasionally, you reach down to their underside and scoop them up.

"Uhh...ahh..." Twi moans as the purple glow around her breasts intensifies, "The spell... ohh... it's working!" Sure enough, as you fondle her tits, you can feel them slowly but surely growing in your hands. You increase your rate, as they grow first one cup size, then two larger. Before you know it, Twilight's titillating teats are twin Triple-D's.

At this point, you notice that your marefriend doesn't look too comfortable. "What's wrong?" you ask.

"You need to, that is, I command thee to drain mine royal milk jugs!" You notice a pair of pearly drops forming on her nipples. The enchantment to cause her to lactate as her breasts expand must be working, but the added weight and pressure is causing her discomfort. Well, better do something about that.

You grab her boob and lift it up(this requires both hands at this point), so that you may begin suckling. Her milk is rich and creamy, and you think you detect a hint of caramel. The effect on Twilight is immediately apparent; she sighs and almost seems to melt, as though experiencing a great sensation of relief.

Upon drinking dry one tit, you move to the other. Her jugs won't stay empty for long, but this will remove the discomfort. As you suck, you notice the arousal beginning to build once more in your partner, and the globes begin their inflation again. Soon she goes from Triple-Ds to Es to, well, watermelons.

"I... can't... move..." Twilight says, panting as you snuggle up to one of her melons. "Too... much... weight..." By now, her nipples have an almost steady trickle of milk flowing out of them.

"Well, this is how I felt when you blew up my junk," you reply. "But speaking of which, it is time..."

You stand up, first climbing onto Twilight's throne, then straddling it with one hoof on each armrest. Twi's telekinesis grabs onto you, stabilizing you for what is to come. From past her mammoth mammaries, she reaches up to your pants, which now have a quite sizable bulge in them. It doesn't take much convincing for your meatstick to pop out, primed and ready to go. Twi squishes her boobs together, giving you the perfect target.

You thrust your throbbing cock in between her ginormous jugs, sliding in and out with practiced ease. Normally, Twilight doesn't seem particularly fond of this, but you've managed to convince her on several special occasions. This time, though, she obviously doesn't need any additional convincing, as she pants and moans just as hard as if you were penetrating her marehood.

"Your... boobs... feel so good..." You pant, as you continue to hump the princess's titties. Drops of precum leak out, smearing on her cleavage, producing consistent wet squelching sounds. The thrusting has caused your pants to sag further down, resulting in your butt being left out in the open. Your tail is shaking pretty rapidly now.

"And... your... cock looks... so... delicious..." She's shaking pretty heavily now; her wings twitch erratically, and her moans are getting louder and more frequent. Milk streams consistently from her nipples, although her actual breast size seems to have it it's upper limit, the pleasure she feels from their stimulation only seems to be growing.

This continues to build up to it's inevitable climax. With a exceptionally loud, and somewhat high-pitched and girly moan, you orgasm, ejaculating heavily all over Twilight's face, getting it in her mane, on her horn and crown. In response, she gives a mighty "NNGGGHHH!!!" and high-pressure milk blasts out of her boobies as they deflate back to their normal size.

You sink down into her embrace. The two of you cuddle, wordlessly for who knows how long. Then, you look around, and realize what you just did. This wasn't the first time the two of you have had sex on the princess's throne, but now white liquid of some variant or other covers the place.

"Well, good thing we came prepared this time!" Twilight says, and you aren't sure if she meant to pun or not. But with a flash of her horn, the mare and stallion milk all vanishes. "You wouldn't believe at how hard it was to find 'Mistress Mask's Kinky Clean-up Cantrip' in the spell library. But so worth it."

"Yeah. Beats having to scrub spunk of the ceiling," you say, putting your pants back on.

"Well, if you'll excuse me, I need to go change my panties," Twilight says, and starts to head down the hall. She stops. "That was... well, messy, and the best kind of messy." She smiles lovingly at you.

"Uhh, Twilight? Your boobies," you say, pointing at her still open bodice. She looks down, blinks, and puts her clothes back on entirely.