If your blog contains adult themes or language, you may want to consider choosing to have a Content Warning page appear before readers can enter your blog. A Content Warning page will warn visitors that some may consider the material on your blog objectionable and will give them the chance to either continue to your blog or to cancel; this is especially useful if you would like to keep minors from accidentally stumbling upon your blog.
To add a Content Warning page to your blog, just toggle the setting titled, "Adult Content?" in your Settings | Basic tab.
* Please note that if your blog contains adult imagery, Blogger may apply the Content Warning page to your blog even if you haven't altered your settings.