FURVERT!

alien alien_humanoid angry animal_genitalia animal_penis anthro ball_tuft balls canid canine canine_genitalia canine_penis canis claws clothing corrugated_neck corrugation costume detached_sheath dialogue dog_costume domestic_dog duo english_text erection fursuit genitals gir_(invader_zim)green_balls green_sheath humanoid invader_zim irken knot libra-11 machine male mammal nickelodeon one_eye_closed penis penis_tip pink_penis robot sheath sir_unit tail text tongue tuft zim_(invader_zim)