Sadly, this is probably apocryphal, but it still needs to be shared. It's from David Greenberg's excellent biography of Calvin Coolidge.
Calvin and Grace Coolidge are at a farm, and Mrs Coolidge is told that a rooster mates several times a day.
"Tell that to the President!" she is reported to have replied.
President Coolidge then asked if the rooster mated with the same hen each time. When he was informed that it was always a different hen, he said, quietly: "Be sure to tell that to Mrs Coolidge."