The Bet
Princess Celestia busted through Princess Luna's door.
"Luna! We've finally reached half a million followers!" Luna covered herself with her black silk blanket.
"Jeez! Knock before you come in!" Luna's face was bright red.
"Luna? What were you…?" Celestia gasped as she put it together, "You were clopping weren't you?!"
"No! I was not clopping! I—you—that's…YOUR thing!" Celestia trotted over to her bed.
"Then what is thing you're clutching oh so dearly?" Celestia was right up in Luna's face. Luna hid the picture under her blanket.
"It's nothing! Go away!"
"Was that a picture of a pony, hmm? It was Shining Armor! I KNEW it!"
"It wasn't Shining Armor!"
"Then who was it?"
"Nopony!" Celestia jumped on Luna's bed and wrestled the picture from her grasp. "Big sister, NO!" Celestia stood up and held the picture with her magic.
"Oh. My. God." Luna hid her head under the blanket. "You were clopping… to DERPY?!" Luna shouted from under the sheet, "Shut up!"
"You really were clopping to Derpy!" Luna threw the sheet at her.
"YOU SHALL BE SILENT, BIG SISTER!"
"You were totally clopping to Derpy!"
"BE QUIET!"
They stared at each other. Celestia looked around. "DERPY!"
"No! Please don't tell her!" Celestia ran out of the room. Luna chased her.
"Derpy! Where are you?!" Celestia rounded a corner. She entered the Stallion's bathroom (Or the guard bathroom). Luna ran around a corner, searching for Celestia. Celestia sighed. Two Stallions stared at her. "… Hey, booyyys." The door flew open. Luna glared them down.
"I knew I'd find you in here!" Luna jumped toward Celestia but she stepped out of the way and Luna tackled one of the stallions. Celestia ran past the other stallion. The stallion stared into space. "…Did I just get felt up?" Luna pushed him out of the way and ran toward Celestia. Luna had a bit of gum in her hair now and had a piece of toilet paper stuck to her hoof. Celestia trotted down the hallway of the castle. She went into Luna's game room and closed the door just as Luna was near it, causing Luna to run snout first into the thick, oak door. Luna sat on the floor and held her snout. "Owwwww…" She stood up and tried to open the door. "Damn it! Sister! Open the door!" Celestia called to Luna through the door.
"By the way, I just saw your Nintendo Store bag! Turns out you DID by the Big Mac after all!" Luna's pupils shrank. "Oh, hi, Derpy! I knew you'd be in here!"
"Hullo, Princess! I'm playing Pony Kart!"
"Of course you are. I have some great news about Luna!"
Luna ripped the door off its hinges. "YOU SHALL CLOSE THY MOUTH, SISTER!" Celestia and Derpy stared at her. She looked like a mess. Derpy looked at Celestia. "What happened to da princess?"
"Yeah, what did happen to you?" Derpy hopped up. "Well, when I was very young, my mummy dropped me on my…"
"Not you, Derpy." Luna walked toward her.
"You! You happened! God, I am SO sick of you! Every day and every night! You're always annoying me, or messing with my stuff, or having sex with other ponies, or clopping and leaving your… whatever all over the place! Don't you think that gets tiring?! Don't you think I would like just 48 hours of not hearing moaning, or screaming all the time?! Don't you think you could tone it down just a little?! Don't you think you could just leave me alone for just 48 damn hours?!" Celestia stared at her.
"I… didn't know you felt that way, Luna." She looked at the floor. "So… 48 hours is all you want?"
"At the least!" Celestia looked at Luna.
"All right, let's make a bet. If I don't have sex with anypony for 60 hours, 5 days, then you must clean the rug for 2 weeks for trailing toilet water down my hallway and getting wood chips on my beautiful floor. If I break and do something sexual within the 5 days, then… you… *sigh* you may rule Canterlot completely for 1 week."
"2 weeks."
"Deal." They shook hooves. Luna puffed out her chest. "5 days starting n…"
"Tomorrow!"
"…Fine." Celestia ran out of the castle as fast as she could. Derpy sat in the corner of the game room. "Oh, Derpy, I'm so sorry you had to see me that angry. I was just tired and frustrated and…" Derpy hugged her.
"Is okay. You do not have to apple-gize." Luna looked at her.
"Here, I'll take you out to buy those six-pound muffins you love so much." Derpy hopped up and down.
"MUFFINS! Muffinsmuffinsmuffinsmuffins muffins MUFFINS!"