Applejack, concerned about her brother's relationship with Fluttershy, confronts the shy pegasus about some of the, ahem, 'activities' the pair get up to. It becomes a conversation that Applejack will regret for the rest of her life.
Part of the Butterflies Continuity, set after the events of 'The Bunny Suit'.
Fluttershy vector from http://Silentmatten.deviantart.com/art/Cuddleshy-293969017?q=gallery%3Amlp-vectorclub%2F29968919&qo=120
Applejack vector from http://Bronyvectors.deviantart.com/art/Applejack-Eeep-309804963?q=gallery%3Amlp-vectorclub%2F29968912&qo=2
Background from http://anitech.deviantart.com/art/Fluttershy-s-Living-Room-292372770?q=gallery%3Amlp-vectorclub%2F34905660&qo=98