Rule 34 Dev - 4_artificial_limbs abs anthro balls biped cybernetics erection foreskin genitals glans hair hand_on_penis humanoid_genitalia humanoid_penis machine male muscular muscular_anthro muscular_male nipples partially_retracted_foreskin pecs penis solo mariart bravestarr thirty_thirty cyborg equid equine horse mammal hi_res|8033901890