We've had musical stuff in the show [South Park] forever. That's mostly because Trey's a big musical fan, and he's a great songwriter. He's been writing songs his whole life. So since the beginning, we've always put a lot of musical moments.

If you're working with a band and you really want to work them into the episode, you've got to say to them, "Look, we need you around every day and on Tuesday night all night because we need you to do voices as we're changing stuff." We do the show so quickly, and you just can't get bands to do that. It's not really fair.

Once you get yourselves into things that are working on a deeper level, you just have to keep going. When you reach that deeper level, you can't go back.

I hate conservatives, but I really hate liberals.

Anything you do to lose weight should be as easy as it can possibly be and still deliver results.

In our show, there's usually a comeuppance. Or, if not, it's an anti-ending. And you're supposed to get that.

Sometimes I wish I could get fired.