First impressions are often the most important. This applies to websites with adult content, as well. It is generally a good idea to utilize an entry portal on such a site.
An example of such language might generally be as follows:
Warning, the website you are about to access contains adult material of a sexually explicit nature. If the laws of your jurisdiction would be violated by your viewing this site, you are directed not to access it. By clicking on the link below, you are stating that you have read and hereby agree to be bound by the terms of service set forth by [insert URL for the website], and that you are over the age of majority in the jurisdiction in which you are accessing this website. I am over the age of majority in my state, show my search results
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