Book 1 - The Behemoth came to Canterlot

"It happened again."

"Twilight."

"It happened again."

"Not exactly, really. It was different this time around."

"That's not the point."

"Fair enough. Sorry, my fault."

"Not just yours."

"Mostly mine."

"No. Mostly mine, really."

"Okay, yeah, mostly yours."

"Hey!"

"What? You said it. Don't pout like that."

"Shush. This is your fault."

"I thought you'd said it was yours."

"I said shush."