FURVERT!

9x9 anatomically_correct anatomically_correct_genitalia anatomically_correct_penis animal_genitalia animal_penis anthro anus ball_gag balls bdsm bondage bound brown_balls chain dominant dominant_male duo erection gag gagged genitals grey_background humanoid_genitalia humanoid_penis male male/male mammal nude paddle penis rhino_penis rhinoceros simple_background spanking_bench submissive submissive_male