Spike stared at the box that'd arrived at the doorstep.
It was labeled as being for Twilight.
But Twilight had shriveled up into dust and drifted away because she was a snail and made a fatal mistake of trying to eat salted fries.
"Welp!" Spike hoisted the AT-4 disposable, single-use anti-tank rocket launcher over his shoulder.
"And with this signature, I declare henceforth, that every day--" Celestia set her quill on the parchment as she spoke. "--will be Bully Spike Day."
"HEY!" Spike crashed through the window. "Guess what?"
"Chicken butt!" Celestia automatically shouted.
Spike fired the rocket and blew up Celestia, thus putting an end to her tyranny over Spikes everywhere.