Moment From The Dark Knight

You wanna know how I got these scars
The Joker tells Gamble how he got his scars (maybe, A story at least)

The Dark Knight
2008
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Batman raises the stakes in his war on crime. With the help of Lt. Jim Gordon and District Attorney Harvey Dent, Batman sets out to dismantle the remaining criminal organizations that plague the streets. The partnership proves to be effective, but they soon find themselves prey to a reign of chaos unleashed by a rising criminal mastermind known to the terrified citizens of Gotham as the Joker.
Tags: dc comics, crime fighter, secret identity, scarecrow, sadism, chaos, vigilante, joker, superhero, based on comic, tragic hero, organized crime, criminal mastermind, district attorney, super power, super villain, batman