LIFE The Rat Pack: The Original Bad Boys

They weren't the original bad boys-Humphrey Bogart's Rat Pack of nocturnal revelers came before Frank Sinatra's-but they were the famous ones: Sinatra, Dean Martin, Sammy Davis Jr., Joey Bishop, Peter Lawford and a host of hangers-on and wannabes, male and female. In Las Vegas, a city that really did never sleep, and in Hollywood, where they teamed up in matinee movies highlighted by the original Ocean's Eleven, they cut quite a swath through the '60s: a martini-fueled "adult" answer to the Beat…