Videos that are hard to watch

I figure we need one of these threads just so in the future we can say we had one at one point.

[video=youtube;cb-tgLUABxA]http://www.youtube.com/watch?v=cb-tgLUABxA[/video]

EDIT : Please read before posting a video.
Remember, it's videos that are hard to watch, not videos that are just weird, trippy, and/or containing animated nudity.
Please consider that only the spam rule is not enforced here before you post a video, all others apply.