FURVERT!

1:1 aged_up alien alien_humanoid anal animal_genitalia antennae_(anatomy)anus black_border black_hair blush border butt butt_grab dib_membrane duo ear_piercing erection eyewear genital_slit genitals glasses green_body green_skin hair hand_on_butt herzydishtar_(artist)human humanoid interspecies invader_zim irken licking male male/male mammal nickelodeon not_furry oral penis piercing red_eyes rimming sex signature spread_butt spreading tapering_penis tongue tongue_out yellow_eyes zim_(invader_zim)