During the final presidential debate, the candidates got into a heated exchange about the use of nuclear weapons, in which Hillary Clinton trotted out her talking point that Donald Trump is unfit to have his finger on the button because of his lack of self-control. What made the internet go nuts, however, was when she added one specific detail to her argument that some are saying is a violation of operational security, a routine she knows well. In the clip, after calling out Trump for being "casual about the use of nuclear weapons," Hillary then casually pops off the exact...