You can’t study comedy. Don Rickles knew that. According to Don Rickles, you couldn’t learn how to say funny things (or how to say things funny). Comedy lived within you. You were born with it. The insult comic, famously dubbed “Mr. Warmth” by Johnny Carson, always threw his best punch on stage. The hard-working stand-up wasn’t just a great comedian, movie star, and friend to the most famous people who ever graced Hollywood. He was one in a million. Rickles did his whole act off the top of his head. And never twice. Whether he was on stage in Las Vegas or roasting Dean Martin.