/watch is a tool that allows you to quickly find and grab video links from comments on YouTube.

/watch uses an algorithm that searches through the comments on your favorite videos, finding videos that have a /watch link. It then puts a small video icon next to the comment that contains the link, and makes the entire link clickable. You can now view YouTube videos, even if they have been embedded on a website.

If you're interested in watching videos from a particular video page, then you can use the built-in "Prioritize Matched Responses" option. You can choose the video you want to watch, as well as which response matches you want to watch first.