The Atlantic, November 2007.
Since you asked … the American idea was born at approximately 5 p.m. on Friday, December 2, 1803, the moment Thomas Jefferson sprang the so-called pell-mell on the new British ambassador, Anthony Merry, at dinner in the White House. Oh, this was no inadvertent faux pas. This was faux pas aforethought. Jefferson obviously loved the prospect of dumbfounding the great Brit and leaving him speechless, furious, seething, so burned up that smoke would start coming out of his ears. And all that the pell-mell did.