The powerpuff girls turn up at Hogwarts during a ball and challenge teachers to a dance off and Dumbledore break dances.
Blossom, Bubbles, and Buttercup were going to fight the greatest fight of their lives. The castle was up ahead, lights and music coming from the great hall
Using all their power they burst through the window into the party in the great hall
"STOP RIGHT THERE EVIL-DOERS!" Blossom shouted, taking a fighting stance.
….
The staff and students of Hogwarts looked in disbelief at the three small girls who were standing on the staff table.
Dumbledore spoke up first.
"Girls, may I ask as to why you have decided to crash through our windows and interrupt our party?"
"It is because we are the Powerpuff Girls! Sworn to defend from all from all evildoers!"
"Excuse me, but what grievance have we made you?"
"It doesn't matter! Prepare to dance!"
Blossom immediately did a pirouette, advancing on Dumbledore, quickly switching to a forwards moonwalk with added arm movements from thriller, stopping in front of him before making complicated movements with her arms, which gave Dumbledore the impression that she may be in pain and in need of help.
While this happening Bubbles advanced on Snape, Step-Dancing her way towards him before arabesque-ing in his direction and finally moving with couru, finishing with a grand battement en cloche which hit Snape and several students.
"DO YOUR BEST EVIL-DOERS!" Yelled Bubbles, who was promptly distracted by Crookshanks sinking hos teeth and claws into her leg.
"BUBBLES! Nooooo!" Screamed Blossom.
"YOU WILL PAY FOR THIS!"
Dumbledore gave her a steely gaze, tied his beard up around his ears and dropped onto his back.
He curled into a foetal position and started spinning on his back, leaping up, crossed his arms and started to dance, waving his arms above3 his head and furiously headbanging.
This was followed by McGonagall picking up Snape and waltzing around with him, silently leading the children out of the room.