Rule 34 Dev - anal animal_genitalia animal_penis anus backsack ball_gag balls bdsm bondage bound butt cutie_mark dildo equine_genitalia equine_penis erection feral fur gag gagged genitals hair hooves horn magic male penetration penis sex_swing sex_toy solo submissive submissive_male suspension swing text diction friendship_is_magic hasbro my_little_pony mythology shining_armor_(mlp) equid equine mammal mythological_creature mythological_equine unicorn 2016 digital_media_(artwork) url|3822046585