FURVERT!

after_masturbation alien alien_humanoid balls blush bodily_fluids butt cum cum_on_balls cum_on_penis dib_membrane duo erection eyes_closed fantasizing femboy femke genital_fluids genitals glans green_body green_skin heart_symbol human humanoid humanoid_genitalia humanoid_penis invader_zim irken looking_back male male/male mammal navel nickelodeon not_furry open_mouth orgasm pak penis simple_background sitting sweat teeth tongue zim_(invader_zim)