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 trick to watch adult or 18+ youtube videos without signing In.

This trick is 100% working as of 2013. So lets get started.

1. First get the Url of video you want to watch. As shown below.
http://www.youtube.com/watch?v=4Xkh6j7RMqk

2. Then copy the Video Id. For above link video Id is 4Xkh6j7RMqk

3. Now paste the Video Id in the link given below.

http://www.youtube.com/v/VideoId?fs=1

Replace VideoI d with the Id you copied in Step 2

4. Now the url will become as shown below.

http://www.youtube.com/v/4Xkh6j7 RMqk?fs=1

5. Done.