Rule 34 Dev - adult_on_young age_difference anal anal_sex animal_genitalia anthro armpit_hair armpit_tuft balls big_penis bigboywuff blue_body blue_fur bodily_fluids body_hair canid canine dripping duo father father_and_child father_and_son fluffy_balls forced fur genital_fluids genitals grin hand_on_hip incest male male/male mammal navel parent parent_and_child parent_and_son penetration penis precum precum_drip riding riding_cock sheath skinny_male smile son struggling vein veiny_penis young younger_male|9726267016