Sloppy and annoying.
First, I can respect movies that delve into the surreal and push the envelope. But regardless of a movie's content, there must be signs of quality work in order to consider it of value. This movie, however, is just a sloppy, annoying mess. It's noise with no coherency - a forced attempt to be insane, and it doesn't work on any level.
First off, the voices are TERRIBLE. Not terrible as in scary, but very poorly done. There's too much breathing into the mic, and the voices are very inconsistent and immature.
The animation is also sloppy, which wouldn't be a huge issue considering the movie's demented tone. But, the animation is so random and disjointed, it gets to the point where any sort of crap is just thrown in in an attempt to be more funny/disturbing/whatever. I understand the concept of randomness in a movie, but it doesn't work here.
The song is poor too; it dragged on way too long, the lyrics were clumsy and stupid, and it was way overblown.
And as a whole, this whole movie was just too disjointed and haphazard to even be taken seriously at all. It goes on way too long, and in the end just ends up being really annoying.