There have been times when I've been asked to do things and I've thought, 'This is great! This is a great script. But, I do not believe myself in this role.' I pretend I'm the producer and I think, 'If I was making this movie, would I cast myself in this part,' and if that doesn't feel right to me,
A joke is not a thing but a process, a trick you play on the listener's mind. You start him off toward a plausible goal, and then by a sudden twist you land him nowhere at all or just where he didn't expect to go.