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1:1 2013 2_penises animal_genitalia animal_penis anthro anus backsack balls balls_blush black_body black_fur blush body_blush butt butt_blush butt_shot diphallism english_text equid equine equine_genitalia equine_penis faceless_character faceless_male fur genitals green_background grey_body grey_fur half-erect horse male mammal multi_genitalia multi_penis nightfaux nude penis perineum raised_tail signature simple_background solo tail text vertical_diphallism