Rule 34 Dev - 1boy 3_toes 4_fingers abs ai_generated anthro anthro_male anthro_only biceps blue_eyes brown_hair casual casual_boner casual_nudity completely_nude confidently_naked cub cute cute_boy digitigrade erection german_shepherd handsome hard_nipples huge_balls huge_cock inside_train long_hair male male_only muscular muscular_anthro muscular_arms muscular_legs muscular_male muscular_shoulders muscular_thighs nai_diffusion nonchalant nude nudist pawpads pecs shameless sitting small_but_hung solo thick_thighs train train_interior veiny_balls veiny_penis wobbling_penis young younger_male|12477427296