“Now then, gentlemares, you’re probably wondering why I’ve called you all here.” Derpy steepled her hooves, staring at her captive audience.
Pinkie Pie, Trixie, and Golden Harvest sat there, staring at her blankly.
“A terrible crime has been committed,” she continued. “This most heinous of crimes could only have been perpetrated by one of you.”
“Oh Celestia,” Golden Harvest muttered, rolling her eyes.
“Yes, that’s right! Somepony here ate my batch of muffins that were made for the upcoming Summer Sun Festival.”
“What makes us the only possible perpetrators?” Trixie asked, one eyebrow raised.
“Well I’m glad you asked that!” Derpy leaned in towards Trixie until the two were almost touching noses. “Pinkie Pie had motive and opportunity. You and Golden Harvest are just here to watch me accuse Pinkie Pie.”
She looked over at Pinkie Pie who just shrugged.
“If you already think it’s Pinkie Pie why bother with us?” Trixie asked with a sigh.
“I dunno.” It was Derpy’s turn to shrug.
All three mares turned to face Pinkie Pie. The pink pony twitched a few times before bursting into tears.
“Okay it was me! I couldn’t help myself! They smelled so good. And they were chocolate chip. How could I resist?!”
Trixie and Golden Harvest exchanged glances before rolling their eyes in unison.
“Okay, that’s it. I’m gone. Bye Derpy.” Golden Harvest trotted off.
“I’m just… Trixie’s outta here,” Trixie said, backing out slowly.
Derpy watched them go, and then turned back to Pinkie Pie.
“It’s just me and you now,” she said.
She leapt on Pinkie and began tickling her.
“Nooo!” shouted Pinkie. “Anything but the tickle punishment!”
The Prompt: Pinkie Pie is the villain.