This is a few years old but only came to our attention today when it started being shared all around the place for some reason.
Nicklaus was playing the opening of The Golf Club at Harbor Shores in Benton, Michigan, a course he designed, with his golf buddies Johnny Miller, Tom Watson and Arnold Palmer.
He decided to stop Miller whinging about a 102-foot putt he'd been left with by showing him how it was done. No bother to him, he lined the putt up and knocked it in.
It's so good I have trouble believing it.