From the Wikipedia article on lizard people:
"In February 2011, on the Opie and Anthony radio show, the comedian Louis C.K. asked former U.S. Secretary of Defense Donald Rumsfeld a number of times if he and Dick Cheney were lizard people who enjoyed the taste of human flesh. Rumsfeld did not answer the question. Louis C.K. interpreted Rumsfeld's refusal to answer as an admission and further suggested that those who are lizard people cannot lie about it; when asked if they are lizards, they either have to avoid answering the question or say yes."
