Originally Posted by El Payaso
In TKJ the Joker says that but it is obvious which story is the real one. The one that's told to us.
How so? It could have been any story but they took the Red Hood one as a homage to the Silver Age origin and then added the idea that it may not be the real origin at all, but noone knows it.
JMS' recent issue of Brave and Bold had him show his take on Joker. Who was just *born* evil and he even killed his own parents.