Princess Celestia and her sister were on the royal chambers, just enjoying each other company when a soldier bursted in.

"News from Northern Equestria" and he took out a letter. "A message from Princess Mi Amore Cadenza and Prince Shining Armor!"

Celestia levitated the letter and a smile appeared on her face.

"Oh such wonderful news! Cadence and Shining are expecting a foal!"

"Expecting a foal to do what, sister?"

The guard looked at the Princess, wondering if she actually had said that.

"Its an expression Luna, it means they are about to be parents."

"Oh...how?"

"Well, you see sister...its..."

Now the guard couldn´t believe Celestia had no answer.

****

"You got to be kidding me."

Twilight said unable to understand the motive the Princess had show up on Golden Oaks.

"You want me to explain where foals come from? Aren´t you two over a thousand years old? Shouldn´t you know this from a very long time?"

"Well not exactly, you see we were both raised as Princess, secluded in a castle,  trained to rule the country  and remain pure and virgins so we were never told how did ponies...you know...when their like each other very much and then touch their hooves and..."

Twilight jaw almost hit the ground seeing the Princess blushing. Actually blushing.

"Okay, I´ll explain everything to the princess..."

"Wonderful!" Celestia didn´t leave. "Can I watch too?"

****

The next day the Mane Six had made an improvised stage on the library.

"Why do I have to do this?"

"Its a request from the Princess, Rainbow! You can´t say no!"

"No I mean, why do I have to play the colt? Shouldn´t we call Big Mac or some other pony?"

"I second that proposal." Rarity said, seeing as she was playing the mare.

"No. I want to keep this to just the seven of us. I´m sure the Princesses are really ashamed by this whole situation."

In the couch were both Princess and Spike were sitting. "Sister, are we going to watch them engage in the mating ritual?"

"I don´t know..."

"Twi, this whole idea is ridiculous."

"Well Applejack, I´m out of ideas. How did you learn about babies?"

***

"Look at the pigs Applejack, one day yah´ll be watching over them."

"What are those two doing, papa?"

"Umh....here haystack, yah have my hat now! No, no don´t lift it..."

****

"Good point."

THe play finally began.

"When a colt and a mare really like each other they are ready to have a foal..." Twilight narrated.

"So I like you and stuff baby..."

"This is the worst production I have ever been...."

"And the move to the bed, where they would make the baby..."

"Don´t get any funny ideas Rainbow." Rarity said as she lied on her back.

"Oh I don´t know, I´m sort of a method actor." Rainbow said, moving on top of her.

"Don´t you dare, Rainbow Dash!"

"Why? Afraid you may like it?"

"Stick to the script!"

"Ugh now wife, let us make a baby."

"Okay."

"And then the male inserts his p-"

"Hey Pinkie! I want to hear!"¨

Pinkie pet her hooves on the dragon ears while singing the cupcakes song aloud.

"...and finally after months of waiting the baby is born!" Awkard silence. "Fluttershy that´s your que!"

Fluttershy was basically kicked from under the bed and she fell to the ground letting go a small "yay"

"And that´s how babies are made! Any questions?"

"That was certainly interesting! Sister, do you wish to have babies with me?"

"...what?"

"Yes! it sounds so entertaining!"

"No Princess! You misunderstood!" Too late they both teleported back to the castle.

"...well, that went well."

"I have question Twilight."

"Yes Spike?"

"Who laid the egg, Rainbow or Rarity?"

"..."

Rainbow pointed at Rarity, getting a slap in response.

(Author note: ....yeah.)