The Ending According to Me

"You guys threw this party? For me?" said Pinkie Pie.  She stared in disbelief at all her friends.  There was cake and balloons and music.  Her face broke out into a wide grin.  "Let's party!"

"Uh, Pinkie Pie."  Applejack trotted out from behind a bale of hay.  "This party isn't for you, it's for that pile of rocks."

The pile of rocks jumped into the party and everypony started to dance.

"Oh."  Pinkie Pie looked at the ground, but then her pupils became extremely small and drifted to either side of her eyes.  "At least I have you all in one place," she said, an evil grin spreading across her face.

Pinkie Pie whipped out the party cannon.

"It's party time."

The ponies proceeded to have the most epic party ever conceived.