"SISTER." Luna shouted, slamming the door open, "I HAVE COME TO A STARTLING DISCOVERY, ONE THAT MAY CHANGE THE FATE OF EQUESTRIA FOREVER."
Celestia sighed, and turned to face her sister. "What is it this time, Luna?" she deadpanned.
"THE FLOOR IS NOT, IN FACT, LAVA."
"What is it made of then?" Celestia replied idly, looking back to the tower of paperwork on her desk.
"THE FLOOR IS MADE OF FLOOR!" Luna screeched.
Celestia facehoofed with the force equal to a small earthquake.