Makemebad35's "How To" videos (partially lost web series; 2010)
In 2010, YouTuber Makemebad35 uploaded a string of comedic sketches based off of the How to videos format. The series of sketches involved him and a girl trying to complete certain tasks while informing the viewers how to execute said task with Damian either ending up either failing or succeeding. After that, a quote appears.
However, all 15 videos soon became privatized. The reason for the privatization was that the girl had trouble getting a job in real life as a consequence of her appearances in the videos.
Only 4 of the 15 videos have been found, with one of them being censored and another being a bootleg.
Although it is likely Damian still has all of them, it's very unlikely that he'll release the rest of the videos, for the sake of the girl's well-being.