"TIPS FOR BOYS ONLY DO NOT WATCH GIRLS OR I WILL KILL YOU BECAUSE MY DAD IS THE LEADER OF THE ARMY" was a lost YouTube video somewhere in 2013 or 2014. It was later deleted because the creator possibly deleted their channel.
The proof of its existence is this Reddit post: https://www.reddit.com/r/DeepIntoYouTube/comments/2s7mlr/tips_for_boys_only_do_not_watch_girls_or_i_will/
This YouTube link: https://www.youtube.com/watch?v=kdWRERXcSPM (Its dead right now.)
And a part of an EmKay video.https://www.youtube.com/watch?v=ex-RE8f_-Mk&t=134s