This is definitely NSFW.
In the back of my mind when this Bill Cosby story broke, I remembered there was a comedian who once did a whole bit about Bill Cosby calling him up and chastising him for being dirty. This morning it finally hit me. It was Eddie Murphy in his concert film "Raw". The clip is below. This came out during Cosby's and Murphy's heyday in the 80s.
Again, definitely NSFW. But you can hear the disdain in Eddie's voice about Cosby's moralizing...