"Okay, Pinkie, go for it!" Twilight voice was higher pitched than normal, but it carried no less of her usual amount of SCIENCE!

"So… I just swallow you, right?" Looking at the tiny, pony-like creature balanced on the end of her hoof, Pinkie couldn't help but liken her coloring to a big chocolate brownie. Twilight nodded up at her, but something seemed off. "I don't know, Twilight. I am not sure if I—"

Pinkie Pie suddenly had Twilight Sparkle, self-titled "Princess of Stomachs," scurrying up towards her face. "Stop, Twilight!" Her tone was so sharp, and voice so loud that her tiny, adorable attacker did stop in place. "You need some caramel!"

"Of course! Pinkie Pie, I knew I could trust you with this step!" Rather than race to get into her friend's mouth, Twilight climbed up until she reached the edge of Pinkie Pie's mane. A slight twinge, as if real danger was just a tail-length away, clutched at Twilight. Instead of the pink mane, she bounded down and rode on Pinkie Pie's back.

Working in Sugarcube Corner's kitchen as she did, Pinkie Pie had the makings of a good, salty caramel already simmering. "How hot can you take it, Twilight?"

Twilight gasped in shock. Pinkie Pie had arranged SCIENCE! "I don't know! Pinkie, you need to measure off three amounts of—"

"Oops"

Twilight found herself in warm caramel that was over a low heat on the stove. The caramel wasn't so hot as it was going to burn her, but Twilight was still not going to push her little hooves to the bottom of the pan. Laying on her belly, she realized how good it felt to be in such a warm place. "Pinkie, this is great!"

Pinkie let out one of her trademark giggles. "Silly billy, you can't stay in there. Remember Twilight, you said something about science?" As she spoke, Pinkie brought a big wooden spoon over and dipped it into the caramel.

In bliss, Twilight was rolling her little body around in the caramel. When the spoon splashed in beside her, she rolled to her belly like a tiny crocodile. Before she could climb onto the spoon, however, a rush of convulsions ran through her body. Twilight was more surprised than scared; everything felt just fine.

Done with whatever strange feeling this little alp-luachra body deemed needful, Twilight showed off her amazing new climbing skills and crawled up the big wooden spoon. Covered in brown, gooey goodness, Twilight sat on the spoon as Pinkie lifted it up.

"Are you ready, Twilight?" Pinkie Pie took the tiny giggle and nod from her friend for assent, and opened her mouth. The spoon slid past her lips, and so did the most amazingly sweet and salty substance.

Twilight's instinct kicked in, and she shoved off the spoon. Coated in caramel, she had no problem slipping to the back of Pinkie Pie's throat and kicking her little back legs. Strong muscles caught her, and if it wasn't for Twilight's expert knowledge of SCIENCE, she would have been a little worried.

The mass of Twilight's body shifted down Pinkie Pie's throat, and she made sure to gulp as hard as she could. The feel of something larger-than-normal settling in her belly made Pinkie giggle. "Are you alright in there, Twilight?"

In a sugar-filled wonderland (a wonderland for an alp-luachra, at least), Twilight squirmed her little body until she was happily reclining. More caramel oozed down from above, and she gulped down a good portion of it.

Pinkie Pie looked up in shock as Applejack barged into the Sugarcube Corner kitchen.

"Pinkie Pie! Have you seen Twilight? She gone and changed herself into some kind o' critter, and is pesterin' everypony to eat her!" Applejack's eyes narrowed, and she looked at Pinkie's face. Smeared around Pinkie's lips were the most decadent caramel, but the real give-away was the tiny hoofprints in the caramel on the wooden spoon. "Pinkie!"

"But she asked really nice! And she said something about science." Pinkie Pie's ears tucked back in worry, and she looked down at the spoon. Reaching over to the stove, she stuck the wooden spoon back in the caramel, not noticing the tiny little alp-luacha egg on the spoon, or the mass of them in the caramel.

Deep within Pinkie Pie's body, a tiny voice yelled: "SCIENCE!"

Author's Note

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Awesome ponies who are already helping to keep me in keyboards and rum:
A.P.O.N.I.
Boulder
Canary in the Coal Mine
Daremo
Dio-Drogynous
Javarod
Nils
Shaushka
Sirion123
Tanis

And special thanks to the following, for careful eyes and friendly words:
Cross Lament
Vutava