Men dabbling with manicures is hardly a new concept. Plenty of dudes have long enjoyed the relaxing experience (and tidy cuticles) of the classic treatment. But it seems that you might have to start fighting some guys at the salon for your favorite bottle of lacquer. According to W Magazine, designer Marc Jacobs is responsible for popularizing #MalePolish. In recent months, he has been taking to his Instagram account to post selfies featuring the hashtag, which drew attention to his neatly painted…