I'm just thinking ahead:
'I say, this Ledger felow does a terrible Joker; I shall away to his place of residence and beat him about the skull and shoulders with a lead pipe until he expires of Death of the Brain. Oh, bollocks and damnation, it appears he has done the job for me. Now I am of two minds as to what to do next. Well, this fellow sitting next to me seems to be a seedy and unlikeable sort; mayhaps I shall beat him to death in Ledger's stead.'
Then with the screaming and the bloodshed and the police and all. You know, just far too noisy.