e621 ! 2008 ahoge alien anal anal_penetration antennae backpack blush dib eyes_closed eyewear fondling glasses hi_res human human_on_humanoid humanoid hyenakay invader_zim irken kissing looking_pleasured male male/male mammal not_furry open_mouth penetration shy signature simple_background sketch tongue tongue_out traditional_media_(artwork) white_background zim
 

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