How to watch age restricted video in youtube without signing in?

Simply remove "watch?" from the video link, and replace "v="  with  "v/"

Eg
       Video link before - https://www.youtube.com/watch?v=6LZM3_wp2ps
       Video  link after changes are made - https://www.youtube.com/v/6LZM3_wp2ps

now press enter
                                                   that's all,its done