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.
“First of all, in terms of investment in Internet-related developments, venture capitalists - once burned - are now very cautious and are investing in areas that actually make business sense.”
“The worst thing is to get involved with people who aren't passionate about what they're doing.”