“Said he’d smack every mf on this plane…Threatened a baby…Said he’d kill everyone on this plane,” the Twitter used wrote.In a sort of citizens’ arrest, six fellow flyers took it upon themselves to grab the man and restrain him, ultimately tying him down to his seat—at which point he becomes audibly unglued, shouting, “You can’t do this! Oh, my God!” with six men standing over him.