Sometime its annoying when youtube ask you to sign in for your age verification to watch 18+ videos. So i will make it easy for you by showing you a simple youtube trickto watch adult or 18+ youtube videos without signing In. This trick is 100% working as of 2013. So lets get started. How To Watch 18+ Youtube Videos Without Logging In ? 1. First get the Url of video you want to watch. As shown below. http://www.youtube.com /watch?v=4Xkh6j7RMqk2. Then copy the Video Id. For above link video Id is4Xkh6j7RMqk 3. Now paste the Video Id in the link given below. http://www.youtube.com/v/VideoId?fs=1 Replace VideoId with the Id you copied inStep 2 4. Now the url will become as shown below. http://www.youtube.com/v/4Xkh6j7RMqk?fs=1 5. Done