You know how sometimes you get those age restricted videos on youtube? The ones where you have to log in to view them.. Well here's a simple way to bypass the restriction.

Youtube video URL's look like this -

If this video was restricted you would be presented with the login page and have to confirm your age.

To bypass this simply change the URL to -

http://youtube.com/watch/v/YDYHu1kLa_k

Deleting the question mark and the equals sign and adding slashes as shown above will mean the video now plays in full screen without you having to log in.

It's not the best trick or loophole but it just saves you having to log in