O

"o" is a video on the channel that was part of the second Reboot ARG. It was the first of two videos given out by the arginduol Twitter account after DMing it, the second being "p".

It was originally unlisted but later made private, possibly due to the fact that "p" was removed by YouTube for violating policy.

Content
The video is similar to the ones from the arginduol Twitter, in that it shows Loud Nigra screaming a message in morse code. For this video, the message is:

"- ..-. ..--- .- -....- - - - -"

Which translates to:

"0F2A-0000"

This is the first half of a level code for . The second half is contained in the second video, "p".

Trivia

 * The title is likely referencing "Gangnam Style", since it combines with the other one, creating "op".
 * This video is in the  playlist.