The trio headed off to the wardrobe, following the painfully convoluted instructions from previously as the TARDIS roared through the time vortex. After a few minutes, they re-emerged onto the main control room floor, to see the Doctor focusing on the screen, a look of concentration on his face.
"So," he asked, "did you three enjoy yourselves?"
"Yes sir!" Apple Bloom replied. "That run were amazin'!"
"Did it all run to time?" the Doctor asked. "I suppose I should technically know that, it being in the past, but you know how this can be."
"Not a single delay," Sweetie Belle smiled. "Though three members of staff appeared to be doing a Abbott and Costello."
"What?" Cozy Glow asked.
"The stuff about skies."
The Doctor smiled. "Few people know that I gave Abbott and Costello that sketch, by finding them performing it in the future, taking it back in time to their early career, then giving them the script to ensure they would perform it, so that I could take it back in time in the future."
"I think I've head enough of mind bending for one day," Cozy Glow added. The machine rolled to a stop, and the Doctor opened the doors.
"We must feed! We must feed! We must-"
The Doctor shut the door. "Sorry, wrong planet. Shouldn't have gone to Krop Tor." He threw some switches, and they were suddenly elsewhere. "This should be right." He opened the doors again.
"EXTERMINATE!"
"Nope!" the Doctor added, and shut the door seconds before a laser blast entered the control room. "Third time lucky?" At last, they touched down in Canterlot, only a second after they had left. "I hope you girls had fun, and if you ever wish to travel again, you know who to call."
The trio stepped out of the doors of the TARDIS, and into the street. "Thank you!" they called, as they headed off.
The Doctor shut the door, and stepped back in, throwing some levers. "Allons-y!" he cried.
That evening, Sweetie Belle was sitting downstairs when her sister got back in from fashion week. "Hi Rarity!" she called.
"Oh, good evening Sweetie Belle," Rarity replied. "My word fashion week was hectic. But there's something I was wondering." She turned to a page in an old magazine. "This was a photograph taken back in 1952. The question I want to answer is... why are you in it?"
Sweetie Belle gulped. "It's kind of a long story..."