Rule 34 Dev - animal_genitalia animal_penis balls biceps big_balls big_muscles big_pecs equine_penis erection hippopotamus horsecock huge_balls hyper hyper_balls hyper_penis macro male mammal model_sheet musclegut muscular partially_sheathed pecs penis sheath size_chart teiral_(xatanlion) triceps urethra xatanlion|2964516384