Pinkie re-entered the basement, infuriated.

"I'VE HAD JUST ABOUT ENOUGH OF THIS!" she yelled. "NO MORE PLAYING! IT'S TIME TO DIE!" She grabbed the scalpel of the table and headed for Fluttershy. "I'll start with you." she said raising the scalpel.

"Leave her alone!" yelled Rarity.

Pinkie Pie whipped around.

"YOU'RE IN NO POSITION TO TELL ME WHAT TO DO!" She turned back to Fluttershy. "NOW HOLD STILL!"

She lowered the scalpel to Fluttershy's skin. She let out a yelp as the blade punctured her skin. Just then the basement door flew open. Pinkie dropped the scalpel and whipped around again.

"WHAT NOW?!" she yelled.

"It's us." said Twilight.

"YOU!" Pinkie yelled. "YOU TWO ARE GETTING ON MY NERVES!"

"Why are you doing this, Pinkie?" asked Twilight.

"Why?" asked Pinkie. "WHY?! I'll tell you why. But you should know. It's all your fault."

"What are you talking about?" asked Twilight.

"Remember?" asked Pinkie. "That little surprise party you threw for me a while back? The one where I was left alone all day?"

"That was because it was a surprise party."

"Even so. One of you could have hung out with me. It doesn't take one pony, two unicorns, and two pegasuses to throw a surprise party."

"Maybe you're right." said Twilight. "But that doesn't give you a reason to kill."

"I'm not using that as a reason to kill." said Pinkie. "I'm using it as a reason for how I became the pony I am now. When I was left alone, all the happiness inside me was replaced with sadness and anger. After realizing you were throwing me a surprise party, I started to feel happy again. But it was too late. The anger had corrupted my heart. Every day my heart grew blacker and blacker until I became this." Pinkie paused. "So, like I was sayin'... it's your fault."

"Pinkie--" Twilight started.

"Enough chit-chat." said Pinkie Pie. "Time to die."