If you stumble upon a YouTube video that has been set as "age restricted", you can still watch the video without signing in or confirming your age. Just use this little URL trick.
If you remove the
watch? and replace the
= with a
/, you'll get a link that goes directly to the video without the rest of the YouTube site, and it will play full-width in your browser. So, for example, you would take this link:
and change it to this:
And you won't have to log in. Alternatively, you can add
nsfw before the
youtube.com portion of the link:
This will take you to a different site to play the video, but it's faster to type in.