FURVERT!

2018 3:4 anthro areola bdsm blush bodily_fluids bondage bound breasts collar contraption_concept crystal_heart drooling equestria_trainers_society equid equine fan_character female gag gagged green_eyes hands_behind_back hasbro hi_res horse linked_nipples mammal my_little_pony nipple_chain nipple_piercing nipple_to_gag nipples open_mouth_gag piercing polar_puff pony ring_gag saliva slave solo submissive submissive_female tongue tongue_out