And pat he comes like the catastrophe of the old comedy: my cue is villainous melancholy, with a sigh like Tom o’ Bedlam.

– William Shakespeare

King Lear, Act 1, Scene 2. On cue evil villain Edmund announces the approach of his half-brother Edgar. Using a simile he says that he will play the part of false and sad beggar Tom O’Bedlam. Ironically this is the role that Edgar will later take on.