how to watch 18+ video on YouTube without login

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 VideoId
with the Id you
copied in Step 2
4. Now the url will become as
shown below.
http://www.youtube.com/
v/ 4Xkh6j7RMqk ?fs=1
5. Done.