This story is a sequel to Princess Celestia is in your bed.

It's hard to get rid of a sun goddess when she doesn't want to be gotten rid of.

Reading the prequel is highly recommended. Find Chapter 3 here!
Rated teen for mild language.
Now with audio reading by MelancholyIguana
Cover art by SilFoe.

Princess Celestia is in your bed, and you don't know why: what do?

Cute, funny, and short. Have fun reading!

Proofreading by RaylanKrios.
Now with audio reading by CaptainBron3y
Second audio reading by MeloncholyIguana.

Based on this story:
Princess Celestia is (still) in your Bed
Princess Celestia Has Stolen All Your Bed Sheets
Drunk CelestAI Is In Your Bed
Fimfic Authors Are In Your Bed
Princess Celestia is in Your Washing Machine

This story is a sequel to Hard Reset

After the events of Hard Reset Twilight's life and mental well being are slowly returning to normal. Her recovery is cut short, though, when a letter arrives informing her that the time loop spell she cast is causing severe damage to space and time itself. In over her head, Twilight tries to summon anypony who will know how to fix it. The pony she gets is the last one she ever thought she would meet... and nothing like she expected him to be.

Available in Spanish thanks to dgs1993
Series TV Tropes page

A secret unknown to any hornless pony, unicorn horns are made of candy. Pinkie Pie found out, and now she wants to try every flavor!

Warning: contains awkward moments and far too much non-consensual horn licking. Proceed at the risk of your horn and your dignity.

Available in Chinese, courtesy of Hell Organist.
Available in Russian, courtesy of boatOV.
Audio Reading by CaptainBron3y.
Second Audio Reading by Kanjigirl.
Featured on Equestria Daily.

Based on this story:
Pegasus Wings Are Made Of Ice Cream
The Taste Of Madness
Lyra's Candy Shoppe
Candy Is Made Of Unicorn Horns
How Many Licks?
To Prevent Horn Decay
Unicorn Horns Are Made of Heroin
Over His Dead Body
A Luscious Loophole
Dr. Doofenshirtz's Sweet Revenge
That Thing We Do
#DealWithIt
Unicorn Horns are...
Unicorn Horns Are Loaded With Calories
Charlie The Unicorn's Horn Is Made Of Candy