Ah, Pictionary … the game that’s fun for the whole Tonight Show — until Catherine O’Hara selects Darth Vader and forgets what a gun looks like. Then it becomes a game that’s really fun for everybody who isn’t Jimmy Fallon, as the late-night host briefly loses his marbles and tries to block the cameras. Shailene Woodley and Eugene Levy never blurt out porn star! But when Jimmy’s mind goes to the gutter, we all go to the gutter.