The joke may be that no one likes fruitcake, but if that were the case, they wouldn't appear on store shelves every holiday season!
Everybody I know who is funny, it's in them. You can teach timing, or some people are able to tell a joke, though I don't like to tell jokes. But I think you have to be born with a sense of humor and a sense of timing.
Every bad joke, every endorsement deal, all of the things that a typical host would normally get creamed for, people don't mind, because they know I don't cheat when it comes to the work I actually try. I'm a lab rat. I'm a perpetual apprentice. The joke is on me if there is one.
Everything is changing. People are taking their comedians seriously and the politicians as a joke.