I used to think that Gaki no Tsukai is just a show about the players having to hold their laughter or get smacked right on the butt. But these links that I'm going to show you (and you are going to click), are just harsh. They can laugh all they want, but I don't think they would want to anymore.
It's hardcore but it gets funnier and funnier too.
Look out for the -Ass-, -Heipo-, etc :P