You can tell on-stage when a joke's starting to lose its pop. It doesn't mean people don't want to hear it anymore; it means I don't want to do it anymore. Because I want to move on to something that has a knee-jerk reaction just like you get when you tell somebody a joke that they've never heard.
There are two kinds of comics; there are the ones who build bridges, and then there are the people who walk across the bridges as though they built them. The bridge builders are few and far between.
I really understood a lot more about comedy after listening to Bill Hicks, who died at 32 years old. He's probably the best comedian who ever lived. Although you can't say that because of Carlin, Cosby and Pryor.
But I work harder now because I have so much more exposure. And actually the harder you work as a writer, the better you get at it. It's like anything else. It's a muscle you have to exercise. I write more now than ever.
There were years when I was a beer and tequila guy, then I got real fat. And then I found that you could actually go on a diet and drink scotch. Then I got hooked on scotch, and if you get hooked on scotch, then everything else just tastes wrong.
I'm definitely guilty of thinking something is funny but thinking the audience won't. Then three years later I will finally try it and it'll kill them. I got to give them more credit.