An art trade done for Rokku-D. Karin thought that out little pony here, Applejack, is a kiddie ride, and is looking by her bum to find a coin slot. Eventually she finds it, and the rest is for you to imagine. XD

Applejack (c) Hasbro, Inc.
Karin belongs to Rokku-D
Art by MofetaFanBoy