Wubbzysuicide666.win
From Screamer Wiki
Wubbzysuicide666.win is a Lost Episode creepypasta created by Devin Millar, under his I'm So Sorry Please Forgive Me.mp4 alias in 2014, that involes the story of ordering a VHS tape of a lost episode of American children's animated TV Show, Wow Wow Wubbzy.
It starts out with a Ukrainian text with a bleeding mouth at the bottom, and then it cuts to Wubbzy playing kickeity kick ball without any title screen or opening logos or themes and such, until he suddenly starts crying, his eyes turn black, and he then puts a cloak over himself, and then bangs his head onto a rock until his forehead starts to bleed, and then it cuts to all of his friends escaping from being hung, Daisy killing everyone in Wuzzleburg, and then jump scaring the viewer constantly while killing everyone, with bloody, gory, and hyperalisticanimation.
It then cuts to a bunch of other scary things happening that are real life footages and all.