On many Source Film-Maker videos on YouTube, there are a number of Scout-related comment chains taking full advantage of the fact that YouTube now displays the commenter's avatar next to their comment.
I think that we may have a new fad on our hands, Mentlegen.
Some examples-
https://www.youtube.com/watch?v=gbdRCLBBl0o
https://www.youtube.com/watch?v=G9upccVvMg
https://www.youtube.com/watch?v=Libic29tjbs
https://www.youtube.com/watch?v=CTUHwRrZZo