Rule 34 Dev - 1boy 2016 anthro athletic briefs clothed clothing equine erection front_view fur grey_hair hair hands_behind_head hay horse humanoid_penis kneeling looking_at_viewer male male_only mammal multicolored_hair navel nipples norwegian_fjord_horse parker penis poking_out pose pubes salkitten seductive shirt smile solo stable tan_fur topless two_tone_hair underwear undressing white_hair yellow_eyes|2350498896