When I used to hang out among comics I heard several tell the joke. What is alarming is when a comic that never "works blue" tells it.
I like comics. Always have. It's the toughest job in show business. Stand Ups have a mic, a stool and a glass of water. That's it. The other thing -- you don't need a college degree. You don't have to be beautiful. And no formal training is require. If you can stand up on stage in with a mic, stool and glass of water and make an audience laugh, then you're a success. If you can't make them laugh, then you fail.
On the other hand, comics are also the most deranged people in show business. They make broadway divas look like actuaries.