From that IMDB link below:
Tagline: WARNING: This motion picture contains explicit portrayals of violence; sex; violent sex; sexual violence; clowns and violent scenes of violent excess, which are definitely not suitable for all audiences.

Which pretty much sums it up, actually. It’s pretty violent, but also really funny in places, if you have a dark sense of humour. I find all kinds of things funny that other people don’t though - you mileage might vary.