usama5895 Google will limit ad-serving on NSFW pages, so these will generate less revenue than other pages on the site. If your site has lots of these pages, Google may flag the entire site as being Adult content which could lead to restricted content across the entire site. So, it's fine to do; but there is an element of risk - as advertisers don't tend to like this content, so it could harm your revenue on other pages, if it begins to become a major part of your site.