Twilight yawns as she steps into her library. It's a nice day to do some studying and-
She lets out a surprised yelp as she sees something she does not expect. Pinkie Pie is sitting on the floor just inside the main entrance, reading a book.
"Pinkie!" Twilight says, annoyed. "You scared me! What are you doing here so early?"
Pinkie looks up, her eyes bloodshot. "Early? It's not early, silly filly. In fact, it's probably getting pretty late," she says, punctuating the last word with a yawn.
"No, Pinkie. It's just after sunrise," Twilight says. She looks down at the book spread open in front of Pinkie. "Were you up all night reading? And why are you lying in the doorway?"
"Really?! All night? I guess I'm the silly filly," she says with a giggle that turns into another yawn. "I was just looking up ways to make business more efficient for the Cakes so they'd have more time for the twins, and after reading a couple books, I found this one. I figured a couple pages right before I leave wouldn't hurt, and, oopsies, I guess I'm almost done with it, huh?"
"What book is it that kept you up all night?" Twilight asks.
Pinkie's answer doesn't make sense.
"Somepony wrote a book about the Cutie Mark Crusaders? And I had it in my library?" Twilight asks with a scrunch of her face.
"No, silly filly! Hehe, I guess we're both silly fillies now. It's about the ponies who help ponies that paint lines on the floors in shops, showing where customers have to stand in line! You wouldn't believe how interesting it is!" Pinkie says.
Twilight narrows her eyes. "Pinkie... Can I see the cover?"
"Sure," the pink mare says cheerfully and flips the book over.
"Oh, come on! Really?" Twilight says, smacking her face with a hoof. "The Queue Demark Crew's Aiders?"