The Collab Video
The collab video was posted on YouTube in 8/2/2017. In which they reacted in sequence to:
After the first video, PewDiePie is ordered to "talk more", making the reactions more forced, and the videos reacted to get darker and darker, starting with a dumb musical video, then a pee fetish video, and then complete homosexual porn, with Ethan describing the video in full detail, liking it, calling it "fun" and making PewDiePie endure it.
The Glitch Video
The glitch video was posted on YouTube also in 8/2/2017. In which Ethan explains the Sub Glitch. With multiple Channels like: BuzzFeedVideo, LeafyIsHere, Tana Mongeau and DramaAlert losing thousands of subs. 23 minutes later. Leafy's the second to make a video about it, then PewDiePie a day later.