"You realize what this means," Discord said from just behind Twilight's right ear.
"What?" she said. Actually, Twilight first said "Gah!" and jumped forwards, her landing cushioned by Pinkie's mane. But then she said "What?"
"I never added days to a month." Discord's grin kept widening as he spoke. It was already giving Pinkie's best a run for its money. "Nopony had, because nopony was foolish enough."
Twilight became terribly aware of a pink glow emanating from her landing pad.
The grin widened until the top of Discord's head nearly fell off. "Tell me, Twilight, do you remember what happens when a pony unleashes a magic like none before it?"
"And that," said Twilight, "is how Pinkie became a draconequus."
Berry Punch nodded. She didn't even pretend to understand, but that never stopped a bartender from being sympathetic. "Another round?"
"Please."