Author's Note

Believe it or not, GodzillaOneTrueKing, I have never watched even a single Ghostbusters movie in my life. 💀💀💀

I'm vaguely aware of the ghost in a can thing and that's about it as far as my knowledge goes lol. Also, welcome aboard the crazy train!

Luna called the Ghostbusters to get rid of Ghost Cake Celestia?

Ghost Cake Celestia screeched from inside the can. "IN THE NAME OF CAKETHULHU, I'M CURSING YOU TO THE MOON AGAIN. YOU HEAR ME? LET ME OUTTA HERE!"

Luna quietly picked up the can, saluted the Ghostbusters as they left the castle, and handed it to Discord.

Celestia was never seen or heard from ever again by the way. Luna's now the One True Princess to Rule Them All.