Look out for the Main Stream!

The term main stream media was first coined by Walter Jenkins during the administration of Lyndon Johnson. President Johnson was fond of the saying that he wanted the press to on “the inside of the tent pissing out instead of the outside of the tent pissing in.” Mr. Jenkins was in charge of maintaining an clear even flow of news that would be going in the direction that the White House favors or what the called the “Main Stream.” It was also a handy device to refer to those members who liked to pee on Mr. Jenkins when he took a wide stance in various men’s rooms in the Washington DC area.
(Truth Doesn’t Even Have It’s Pants On, The History of the Main Stream Media, Doris Kearns Goodwin, Playboy Press 2006)