I've tucked you in, you've had your story. You're not thirsty, that's hayseed. Just go the b*ck to sleep.

Applejack puts her sister to bed at night, but Applebloom just won't go the b*ck to sleep.

Takes place maybe a year or two before episode 1.
(Title and blurb inspired by 'Go the F*ck to Sleep' by Adam Mansbach)