Some Comedy May Be Older Than We Think

This morning in my truck on the way to work, I heard Redd Foxx tell a great joke on XM Comedy. Let's put it this way, the version of the joke that I heard involved OJ Simpson, Ronald and Nancy Reagan, and the punchline "Is that you, OJ?" Foxx's version involved LBJ, which means this joke didn't originate during the Reagan administration, but dates back to before I was born.