I had the same thing happen to me after downloading a "Iffy" program, that i got a virus from, it was a ForceOP program, I only wanted it to see if it was possible... Me and Cj64 run a server that's sort of important. But Username666 Hacked youtube a few years ago, if you went on his channel you would be redirected to a playlist that would not stop, it was all creepy horrible stuff, please don't look him up. Also, he has his own Wikia, he's an urban legend now...