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2015 ambiguous_gender ambiguous_on_bottom areola big_breasts big_butt breasts butt digital_media_(artwork)dominant dominant_female duo facesitting female female_on_top ghost greyscale hi_res human humanoid mammal mario mario_bros monochrome nintendo not_furry on_bottom on_top paper_mario shadow_queen shadow_siren sitting sitting_on_another smile solo_focus spirit theboogie