'Poser man' is the term dubbed to a man who feels that his physical appearence is far more important than any other attribute of his existance. Commonly applied to males who spend more time shirtless than shirted, this English neologism is derived from the synonyms 'arrogant' and 'twit'.
William: "Oh my, look at that man outside his house. See his rippling torso! I admire how it glistens in the winter snow. Say, isn't it rather cold to be shirtless?"