"What the....!" Applejack goes bright red. Too shocked and embarrassed to say anything else.

"Mmpmp..pha...What the heck Twilight!?" Rainbow shouts, finally shaking her gag loose. "Have you gone crazy or something? This isn't funny!"

Then, a pack of diapers appeared. Twilight removed one from the package, lifted Applejack's legs and slid it under her.

"What are you...?" Applejack's eyes widen as her friend starts to slide the diaper under her. She starts struggling more but can't break the magic. "Help! Help! Granny Smith! Big Macintosh! Help!"

"Somebody! Anybody!" Rainbow Dash cries as well as she rolls around in her bonds. "Twilight's gone crazy!"

Twilight gagged them again. "No one can hear you. I magically soundproofed the barn. Now, stop trying that before you get spanked." Twilight then taped the diaper on Applejack. "Rainbow, it's your turn."

"Wha...mmph!" Applejack is cut off by a knotted bandanna going in her mouth, her blush getting even brighter as she feels the diaper fastened around her waist. She tries to squirm as Twilight's magic leads her, but it is quickly replaced by the ropes again.

Rainbow also starts growling behind her gag, but soon enough she too is pinned before Twilight as she unfolds another diaper.

"Now that you two are diapered, we can get started." Twilight then used her magic to turn the whole barn into a nursery.

In the flash, both Applejack and Rainbow shield their eyes, upon opening them they look around frantically. Moreover, the realize that their gags have been changed from knotted handkerchiefs to strapped in pacifiers and now instead of ropes their hands are cuffed together in mittens.

"mmphy!" Applejack shouts through her paci-gag, blushing as she realizes it makes it look like she's suckling it.

"Yes, it looks cool, right? You two get to be my babies for the day!"

The two girls exchange a glance and then start trying to scream at Twilight through their paci-gags.

"WMPH WMPH WHMP YMP TWIMPH!" Applejack mumbles. She'd never seen her friend like this, not only was she humiliating them but she seemed like she was genuinely enjoying it.

"Oh, shush. Maybe this will get you two submissive." Twilight then placed each of them in a crib and tied all of their limbs so that they are splayed across the matresses.