Twilight Sparkle discovers the human science of advertising. Being Twilight, she can't help but propose a new ad campaign to Princesses Celestia and Luna promoting the Conversion Bureaus. And being Twilight, neither can she resist pulling the mane six into this little project, and then taking things a bit too far.

As usual, Princess Celestia takes all of this in stride, knowing she can cope with anything Twilight dreams up. Or can she?

Set in the Conversion Bureau universe. When Luna and President McCullough are unable to seek help from Twilight and the rest of her friends, they seek help from an unlikely source. The character of Midnight shadow was used with permission.  

Windfeather, who has just recently been found responsible for stranding around 2000 newfoals in the exponential lands, has been asked to have tea with the princesses.  This is the story of how Princess Celestia deals with threats to Equestira that are only mere ponies.  An alternative to chapter ten of Chatoyance's The Taste of Grass (Written with Permission).  

Source

“You know how when you're at a party, and you use what you didn't realize was a magic letter to Princess Celestia to roll a joint?

I guess maybe that's not, uh, a thing, but yeah, I did that this one time.  

It was at that huge party Shannon and Adam had a while back. You know, Max's friends? …No, Celestia's not one of--

They wouldn't know each other...

But anyway, yeah, in case you were wondering why I'm all like, a girl unicorn now, that was kinda the short version.”

Meet Rob, a 27 year old secret brony who gets more than he bargained blah blah blah

Get a front-row seat in his brain for the Long Version, as he wracks it trying to weasel out of being a pony, or at least not let anything slip by as he takes it one freaky moment at a time.

What will the other lost-weekenders think when they walk in on him passed out on their couch?  Will he be able to get through the city and at least back to his apartment, if not to normal?  Will he learn anything about REAL friendship along the way and stop being such an insufferable hipster?  What if some blowhard fan author just couldn't “turn it off” and ended up trying to write a pony story as actual sci-fi?  Will Ahuizotl get the statue? Does P=NPony?  Can you grab me another beer while you're up?

And did that letter ever get to Princess Celestia?

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Your standard pony Trip Report, with your standard pseudo-autobiographical narrator, written to flush out my creative plumbing and play around with, uh, like, good...thinkies and word-putting, and because the urge to do it just wouldn't leave me alone, so I just had to get it outta my system.  I just really like the juxtaposition of humans and ponies, I guess.

Title is obviously a reference to M-Theory and Tristram Shandy, respectively.  Because I can never pick just one thing.

Rated T for Adult Situations, gratuitous overthinking, and fuckloads of swearing.  Oh and I guess drug use.  

Celestia wishes to extend the gift of Conversion to all the inhabitants of Earth, even those in the blasted and lawless badlands sectors. The Blackmesh PMC has secured the aid of the Ossuary Brotherhood, a fanatical warrior cult, in setting up a Bureau in one such location. But how will a tribe that embraces mortality and suffering react to Equestria's offer of a permenant end to strife and pain?

Source

A young woman awakens transformed into an Equestrian pony - yet no other human being can perceive her new body in any way whatsoever. With clumsy hooves, but a bright mind, Gregoria Samson must trust in herself to discover the incredible, monumental truth behind her impossible change.

Alex Meyers is a newly graduated lawyer looking for a calling. He thinks he might have found it when he lands a job at the firm of Artemis, Stella & Beat. The firm has only one (highly unusual) client, namely the AI called Celestia. Forging into totally unexplored legal territory and led by a boss who's either brilliant, crazy, or both, Alex will learn exactly how hard it is to be responsible for drawing the lines between right and wrong.

Set in the Optimalverse, so read Friendship is Optimal first

Hello, I'm Mary. I'm a mother of two, married to the most wonderful man I could hope for and am living as far as I'm concerned, the life I've always wanted. So...why oh why, in the wide, wide world of whys, did this happen to me?

This is my story, for better or for worse, about how things in my life became beyond unbearable.

Author's note edit2-This fic is dedicated to moms everywhere. Just sayin', moms rock.

That is all! Please message me if you have any more comments, questions or concerns. They will be forwarded along to the cabin and Captain of the flight.

-Cheers, Merlos The Mad

-Edit Art was commissioned by the illustrious  Conicer!

-editedit Art was adjusted by LordElliott

Steel and circuits made her body strong and her heart cold.  

But what is she without this shell?  If you stripped away the facade, what would be left to save?

Source

Set in the "Friendship is Optimal" universe, this is a one-shot story examining a throwaway line in one of the last chapters of the original - what happens when an implacable, ruthless and overall efficient Celest-AI meets something which isn't just dead matter, but doesn't qualify as human? This is one possible take on it.