If you don't know, it's a parody of a scene from The Assassination of Jesse James. I won't link to it because it's slightly more graphic than the Yogi animation version, and I'm sure you can look it up yourself if you wanted to. It's not in the real Yogi Bear movie.
I personally love the animated short, to be honest. Yeah, it's twisted, but it's really beautiful when animated characters can make you feel emotion the way that one does. I dunno, maybe that's just the animation nerd in me.
You should probably put a warning when you post stuff like that though, about the violence, in case anyone's sensitive to that stuff.