>You are Twilight Sparkle.
>And Mrs. Cake has fallen ill.
>Normally, you would have prescribed to her some bed rest.
>But, she insists on getting better now.
>She needs to prepare a large shipment of confectioneries this week.
>And she cannot afford any time off.
>Thus, you come into the picture.
>Opening the door to her bedroom, you see her balled up in her sheets atop her bed.
>Hearing her soft snores, you lightly rap your hoof against the door frame.
“Mrs. Cup Cake?  It's me, Twilight.”
>Her ears perk up at your voice as her head emerges from the pile of pillows.
>The pink striped mane hangs lazily in her face as her tired eyes squint over you.
>An attempt to bow to you only results in a slight nod to you.
>”Oh, Princess Twilight, thank you for coming over.”
>You wave your leg in dismissal.
“No need for formalities Mrs. Cake, we're still friends despite my status.  And I'm here to help you get better as a friend, yes?”
>She weakly nods her head.
>”Of course.  So... what did you have in mind for a cure?”
>You trot up to her with a smile.
“I read a few books, and while it is a bit unorthodox, a bit of alicorn magic should make you feel good as new!”
>Her eyes seem to sparkle at your words as a small smile forms on her mouth.
“There were a few possible side-effects, but starting tomorrow, you'll be making pastries in no time!”
>”That's wonderful to hear, but... how will you give me your alicorn magic?”
>You stand proudly over her as you present your horn to her.
“This is just between friends, but if you suckle at my horn for a bit, you should feel much better in the morning.”
>Seeing her eye your magical appendage with hesitation, you try to assure her.
“Really, I don't mind.  You'll feel much better, trust me.”
>You feel her lay her lips upon your horn as Mrs. Cake closes her eyes in rest.
>As she attempts to sip at the non-existent liquid from your horn, you focus your magic.
>A purple glow surrounds your horn as the energy flows into the motherly mare.
>Mrs. Cake lets out a sigh of relief as her mouth continues to travel down towards your head.
>Focusing on channeling, you do not notice her lips slowly encompassing your head.
“Hmm?”
>Directing your eyes to Mrs. Cake, you see that she has already taken the top of your head into her maw.
“Mrs. Cake, are you okay-”
>In a single swooping motion, the earth pony's mouth lurches forward, taking in your entire head.
>You close your eyes as saliva rolls down your eyelids and her probing tongue searches under your muzzle.
“Mrs. Cake!  Is everything-”
>A loud gulp silences you as your head is forced into her esophagus.
>Your torso, once dry is now slowly being soaked by the surprisingly flexible maw of the mom.
>Her tongue takes deliberate steps in tasting every inch of your coat.
>The teeth press into you playfully, as if she were massaging your belly with her chews.
>You throw your fore hooves forward into her throat, not wanting to disturb the sickly mare.
>Slowly squeezed down further into Mrs. Cake, the fleshy tube wrings you down towards her stomach.
>As your head meets the sphincter, Mrs. Cake's tongue appears to have other ideas.
>With your rear legs still sticking out of her mouth, her tongue begins to sample your hindquarters.
>Her tongue expertly glides over your privates, stimulating your drive.
>It slithers in and out of your loins, touching every right note.
>As your head presses through into the stomach, you pant heavily at the humid air.
>The oral muscle begins to thrust wildly into you, slowly nudging the rest of your body into her digestive tract.
>As your forelegs pop into the stomach, you press into her stomach as the force of her thrusts increases in intensity.
>Involuntarily squeaking in pleasure with each plunge, you're shoved deeper into the claustrophobic organ.
>You gasp as your vaginal walls clench down hard on Mrs. Cake's tongue, unleashing a torrent of fluid into her mouth.
“Ah... hah...”
>Fatigue settles into your body as you feel the chubby earth pony slurp the rest of your body into her mouth.
>Given no time to recover, the stomach kneads away at you as your legs slowly travel down her throat.
>The only sensations you feel are the slippery, soggy flesh that surrounded every inch of your body.
“Mrs. Cake...”
>Weakly calling out to your patient, your hind legs finally pop into the stomach with the rest of you.
>Your tail slowly follows as the clump of hair sticks to your coat.
>The only response you received was a gentle snoring.
“Well... at least she'll feel better in the morning...”
>The liquid in the organ slowly starts to rise as the stomach continues to churn away at you.
>Being quite the large meal, her body wastes no time in twisting and pressing your form.
>Her heartbeat thunders in your ears as the wet squelching sounds of digestion surround you.
>Attempting a teleportation spell only results in failure.
>You transferred a bit too much magic to the host to allow you to escape so easily.
>As the muscular walls rhythmically churn around you, you pass out in exhaustion.
 
>”Thank you, come again!”
>Waving off another satisfied customer, Mrs. Cake happily restocks the apple pies in the display case.
>Storing the bits inside the register, she swats away a bead of sweat.
>”Phew!  I don't know what Twilight did, but it sure did do the trick!  I feel fantastic!”
>Admiring her round body, she does notice something amiss.
>Though she seems a bit larger, she shakes her head, thinking its her imagination.
>”I really should thank her after I'm done with the newest shipment, I sure hope she loves Strawberry cake!”
>Happily trotting off to the backroom, she continues to work away at the oven.
[spoiler]>The tight embrace of the intestines were far too strong for Twilight to wiggle her way out.
>She laid in peace as the tube pulsated and allowed her to lurch forward, inches at a time.
“Advantages of being an alicorn, I suppose.”[/spoiler]