Starlight Glimmer has been thinking about her past of how she revealed she was evil all along and she stole Twilight Sparkle's cutie mark and try to run off into the mountains. She felt really bad after what she did, but she did learn her lesson and fix everything. She's been trying to make that part of the past go away, so she decided to bring it back as a prank on Spike. She'll make the prank look like she stole Twilight's cutie mark and Twilight will fake she lost her mark again. It was her first time pranking somepony, Pinkie Pie and Rainbow Dash taught her how to do pranks.
"Twilight!", she said.
Twilight was chilling on her couch. She turned and saw Starlight running towards her. "What is it, Starlight?", she asked.
"I'm glad you're in here, because I talk to see you.", Starlight said.
"OK, what's on your mind?", Twilight asked.
Starlight sat on the couch and faced Twilight. "Remember a long time ago that I stole your cutie mark and try to disappear in the mountains?", she asked.
"Yeah, I guess I do.", Twilight said. "Why?"
"I decided to bring it back... as a prank.", Starlight said.
"Sure, I guess you can do that.", Twilight said. "Who are you pranking?"
"Spike.", Starlight answered.
"Won't he freak out if I tell him I lost my mark again?", Twilight asked.
"I'll try to cover your mark with the color powder of your fur color and we reveal it to him, then he won't get upset at us if he likes it.", Starlight said.
"OK.", Twilight said. "But, lets not get too dramatic."
"Why not?", Starlight asked.
"I don't want him to get upset, I just want him to like the prank.", Twilight said.
"Good point.", Starlight said. "You ready for this?"
"Sure.", Twilight said. "Spike should be home in five minutes, we should hurry."
"Let's do it on your bed, so he doesn't see us doing this in here.", Starlight suggested.
They both walked in the bedroom. "Stay in here and sit on your bed, I'm going to get the powder paint.", she said.
Twilight walked over to her bed and sat on her bed. She waited patiently.
Starlight walked back in with the powder paint with the color of Twilight's fur. She sat next to Twilight on her bed. "I'm going to cover up your cutie mark on both flanks to make them look like their blank.", she said. "Should we start?"
"Sure.", Twilight said.
Starlight picked up the brush with her magic, mixed it with the paint, and spread it all over Twilight's cutie mark covering it up.
Twilight giggled, but, only a little bit.
"Does it tickle?", Starlight asked grinning.
"Yes.", Twilight giggled. Her cutie mark was completely covered in paint of the color her fur.
"Where should I hide?", Starlight asked.
"Spike's bedroom.", Twilight suggested.
"OK, when Spike comes, get in position.", Starlight said. She left Twilight's room and went into Spike's to hide.
Twilight heard foot steps, she gasped. "He's coming." Twilight got in position, she laid her head on her pillow, folded her fore arms, and crossed her back hooves.
Spike opened the door and walked in, he widen his eyes. "Whoa. What happened to you, Twilight?", he asked. "And where's your cutie mark?"
Twilight's eyes turned to Spike. "Starlight stole it from me and ran off.", she said.
"She stole it from you?", Spike asked. He walked over to her bed and sat down on it, he looked at Twilight's flank. "What did you say to her?"
"I told her she's not my former student and she flipped out.", Twilight said. "She used her powers on me and stole my mark. I never saw her again."
"Wow, I guess she never got over her past.", Spike said.
"Nope, she didn't.", Twilight said. "I guess I'm not the princess of friendship anymore."
"What?", Spike asked.
"I'm retiring from being a teacher now that my mark is stolen.", Twilight said.
"Are you going to become a markless villain?", Spike asked.
"That's right.", Twilight said. "I'm leaving Ponyville forever and I'm going to join the changelings."
"But, you can't join them.", Spike said. "What about your friends, or Celestia, or Cadence, or your brother, or... me?"
Twilight grinned and laughed.
"What's so funny?", Spike asked.
Starlight stepped in. "Gotcha, Dude.", she laughed.
Spike dropped his jaw. "What's going on?", he asked.
Starlight grabbed a bucket of water and dumped it on Twilight's flanks. "Reveal.", she said.
The water washed the paint off Twilight's flanks and her cutie mark has been shown again. Twilight and Starlight burst into laughter. "I can't believe you fell for it.", Twilight said.
"How did you do that?", Spike asked. "That blank flank looked so real."
"Aw, come on.", Starlight said. "Did you actually think I would take her cutie mark and run off?"
"Girls, it's ok, it was a good prank anyway.", Spike said as he walked out the door.
Twilight and Starlight smiled at each other. "I think he's not upset.", Twilight said.
