yeah, because when a guy dressed like a crazed clown approaches me the first thing i do is let my guard down.
where are people getting this from? fooling people into a false sense of security based on his clownish looks has never been part of his m.o.
ever. every citizen of gotham (and the dc universe) knows better than to mess with the joker and if you happened to be one of the few that didnt know better you would take one look at him and run (unless of course you were a young child, perhaps a boy scout, and he was handing out free cotton candy at the fair). and since when has he looked like a funny clown (barring the silly comics code/ seduction of the innocent era). he has always looked more creepy than disarming (kane/ finger joker looks downright psycho!). and he is often referred to as disfigured somehow. im not saying he needed a huge scar to show his disfigurement but he has never looked normal.