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3_fingers animal_genitalia animal_penis anthro canine_genitalia canine_penis chupadore crossroadspony detailed_background duo eyes_closed fingers flexible furgonomic_piercing furgonomics genitals half-erect kerchief male male/male midriff muscular muscular_male nude penis piercing pinup pose prosthetic prosthetic_leg prosthetic_limb raemyshu robin_(chupadore)rvb_revolution samael_wurlitz sheath stretching tail tail_tuft tuft