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.

We are entertainers. We're trying to entertain people.

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.

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

We're kind of like the smoking section in high school. We're immature, keep to ourselves.

I'm concerned about people being happy.

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