"So," asked Mabel, "Any requests?"
"What do you mean by requests?" asked Dipper.
"You know, stuff you want me to turn into." said Mabel.
"Not sure." said Dipper.
"Come on, give me something to work with." said Mabel. "Ooh, how about I turn into a giant spider? Or a tiny elephant?"
Mabel shapeshifted into a small, round elephant around the same size as she was. She tried to make trumpet noises a few times with her trunk. "How's that?" she asked.
"Hmm. How about, I don't know, a..." Dipper paused to try to think of something really elaborate and unusual. "...how about a carousel that's every colour of the rainbow, but also three different shades of grey, covered in rubies, gold, and spikes, with carriages made of chocolate and aluminum, and shapes like squids and cuttlefish, all spinning counter-clockwise?"
After a brief pause, Mabel said "Alright, let me try it!"
She closed her eyes in concentration, and fell apart into bugs. Slowly, they rearranged themselves into the shape of what Dipper described. Soon, they changed colour, forming the carousel of chaos that Dipper had come up with. It spun around a few times, blaring a tune that sounded like a mix of polka, gospel, bluegrass, and death metal. After a few seconds, it fell apart into a swarm of bugs, which soon took on the form of Mabel, who panted.
"How was that?" she asked, sounding somewhat tired.
"Pretty impressive." said Dipper.
"Thanks. If you have anything else you want me to turn into, let me know!" said Mabel with a smile.