Environments that may be problematic include workplaces, schools, and family settings. The marked content may contain nudity, pornography, political incorrectness, profanity, slurs, violence or other potentially disturbing subject matter. Not safe for work ( NSFW) is Internet slang or shorthand used to mark links to content, videos or website pages the viewer may not wish to be seen looking at in a public, formal or controlled environment. For other uses, see NSFW (disambiguation).