I'm so Evil · 5:25pm Jul 26th, 2021
Spoilers ahead for Who is Pinkie. Ye be Warned. 
His suspicions were confirmed when he heard the rustling of paper underneath him and felt the corner of a hardbound book. The study session had been so intense that he’d fallen asleep on a pile of books, right there in the middle of Twilight’s castle.
His other eye opened, and as he surveyed his surroundings, he wondered why he’d never realized how comfortable a bed of books could be. It was a bit counterintuitive, but the lack of any aches or pains only proved the validity of the idea.
A soft groan caught his attention, and his heart began to hammer against his sternum when he felt the soft touch of another pony’s coat against his own. His previous statement was only half-right: the study session last night had been so intense that both he and the Princess had fallen asleep on a bed of books.
Long Run swallowed hard as Twilight Sparkle wiggled a bit to push more of herself into him, and to his growing horror, he found that he was comfortably spooning the Princess. He had no idea how they’d gotten into that position, or how he’d managed to get his left wing over her, or how their tails had managed to intertwine.
What he did know was that Rainbow Dash was going to kill him once she found out about this, to say nothing about Twilight’s other friends. Or her family.
Or Princess Celestia.
Only one answer to this trouble he’s getting into; herding!
When twilight wakes up he got to risk it all for a laugh and simply say last night was amazing twlight
Cadence will kill him because he didn't get pictures.
Celestia and Twilight Velvet will kill him for the same reason, but with the added bonus of they want the pictures to put into an album to embarrass Twilight with later.
Twilight is going to consider this an example of Closest Hexipedal Packing, of course.
(1) Since Pegasi and Alicorns are hexipeds, of course, meaning they have six pedal extremities, makes this a take-off on Closest Hexagonal Packing.... Oh, wait. It loses something when explained.
Muah ha ha evil
... Whelp there's only one recourse from here. Long Shot, change your name, dye your fur and move to Griffonstone.