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

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.

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.

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

Sometimes we come up with something great, but a lot of times it just feels like work.

I'm concerned about people being happy.

Even celebrities, most people have a sense of humor. Most of the people we meet who we've done on the show, like it.