Warning: The following story is currently unedited and contains dark humor, an odd set up for a practical joke among immortal Princesses, whom one of them will no doubt go crazy, random things before she thinks she "kicks the bucket."
It just might be the most ingenious prank that Princess Luna has ever conceived. A simple one at that. All she had to do was to bribe her sister's most trusted doctor to tell her that she's dying. With only about a week left, Celestia then decides that she will spend her last eight days doing the crazy, immature, random and funniest things that she could think of while preparing for her own funeral.