anal animal_genitalia animal_penis balls bestiality blue_sky bridle cloud day duo equine_anus equine_genitalia equine_penis faceless_character faceless_human feral from_behind_position genitals harness hillside holding_tail light looking_pleasured lube male male/male narrowed_eyes nude open_mouth penis raised_tail saddle sex sky sunlight tail_grab tongue tongue_out ausfer asinus donkey equid equine human mammal hi_res
A formerly straight donkey discovering what his prostate can do.