The bloopers of Hollywood's golden age

We often imagine the actors of the golden age of Hollywood a bit like the characters they brought to the screen: well combed, well undermined, well brought up. So it's kinda funny to see them drop a good Son of a bitch! felt well after a failed take. While waiting to have gag reels official in Blu Ray versions of Casablanca, Citizen Kane, Gone With the Wind and company, here is a small compilation of classic Hollywood bloopers.