“F-word.” “F— you.” Do you know what these expressions mean? Of course you do. Everyone over the age of 10 does. And yet the American mass media continue to use these infantile symbols when they want to refer to someone using the word fuck. U.S. News & World Report is the latest grownup magazine to coyly play it both ways. In this week’s article on how John McCain’s “sharp tongue could affect the [presidential] race,” they noted he was reported telling Senator John Cornyn “F— you.” Later in the story, they reminded us that three years ago, Vice-President Cheney “famously…