1boy 2015 animal_genitalia anthro anthrofied bondage bound brush caroo character_request clothing collar cutie_mark equine erection fan_character feathers feet friendship_is_magic gold_(metal) hasbro horsecock male male_focus male_only mammal my_little_pony original original_character pegasus penis precum ring shadow shaking sitting solo string tears tickle_fetish tickle_torture tickling tickling_machine wings