FURVERT!

aged_up alien alien_humanoid antennae_(anatomy)blue_hair blush bodily_fluids clothed clothed/nude clothing dib_membrane duo eyewear eyewear_only fellatio genitals glasses glasses_only gloves green_body green_skin hair hand_on_hip handwear heart_symbol hi_res human human_on_humanoid human_penetrating human_penetrating_humanoid humanoid humanoid_penetrated interspecies invader_zim irken looking_pleasured male male/male male_penetrated male_penetrating male_penetrating_male mammal masturbating_while_penetrated masturbation motion_lines navel nickelodeon nipples not_furry nude open_mouth oral oral_penetration pak penetration penile penile_penetration penis penis_in_mouth pubes purring saliva saliva_on_penis sex shaking shivering simple_background sweat tan_body tan_skin unknown_artist wearing_glasses zim_(invader_zim)