You and Applejack have been picking apples all day. Afterwards, Applejack invites you back to her house and up to her room, where she takes off her boots and socks and shows off her bare feet so they can breathe

Phew, apple picking is tiring. But now my feet can finally rest! I say, wiggling my toes in the nice cool air of my room

Thanks for your help, partner! I'd have been out there all day if you hadn't come along!