Jerry Seinfeld created the most successful sitcome of the 90s (yes, more successful than "Friends"), so the man knows a thing or two about writing jokes. In this video by The New York Times, he talks through his creative process and the hours it takes to create those polished stories and one-liners that have made his name.
Fancy yourself the class jester? You have much to learn, young padawan.
And if you haven't checked out his excellent web series, Comedians in Cars Getting Coffee, get to it.