There are a lot of versions of the Joker origin story. The film The Dark Knight even offers a couple. But we think the internet has FINALLY solved the mystery!
Here, finally, is how he became the Clown Prince of Crime!
And because I had the extra pic, a little bonus humor…
Gabbing Geek 
So, the Joker might have legitimately been hearing voices in his head that weren’t caused by mental illness?
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