Aaron Burr walks into a bar. The bartender says, “We don’t serve alcoholic cows here” (for the sake of this joke, Aaron Burr is a cow who is also an alcoholic).
The point is, jokes weren’t very funny back in 1804.
Despite that, Aaron Burr was an important and distinguished figure in early American politics: he served as a US Senator, and as vice president of the United States under Thomas Jefferson. He set an example for cows who are also alcoholics for generations to come.