Alexander Pichushkin was a child, he fell backward off of a swing. As he sat up, the swing swung back and caught him in the forehead. It caused lasting damage to his developing frontal cortex, the area of the brain that controls problem-solving, impulse , and personality traits. Also masturbation....according to Joker! Nooo not really....well maybe.

Alexander Pichushkin. "For me, a life without murder is like a life without food for you." Dark shit yo...Enjoy!