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16:9 2018 3d_(artwork)3d_animation 6_claws 6_fingers alien alien_(franchise)ambiguous_gender ambiguous_penetrated ambiguous_penetration animated black_body black_penis black_skin black_tail bouncing_butt butt cave claws digital_media_(artwork)duo erection eyeless fingers from_behind_position genitals glistening glistening_body glistening_skin hi_res high_framerate hive humanoid humanoid_genitalia humanoid_on_humanoid humanoid_penetrated humanoid_penetrating humanoid_penetrating_humanoid humanoid_penis long_tail loop lying male male/ambiguous male_penetrating male_penetrating_ambiguous nails neck_grab no_sound not_furry nude on_front on_top open_mouth penetration penis pinned pushed_down rough_sex sex sharp_teeth short_playtime smile source_filmmaker_(artwork)tail teeth text twitchyanimation video widescreen xenomorph