Why does Jonah Hill have a scar on his arm?

Answer 1

**Per an article in Rolling Stone via The Huffington Post**

He received the scar when going through a rebellious teenage stage (his mom was diagnosed with cancer and he began to act out) by joyriding with his friends. He hung his arm out a car door while his friend was driving reckless and they both got into a terrible accident. The injury to his arm was so bad, the doctors almost considered amputating his arm. Since the accident, Jonah says he completely changed his outlook on life and vowed to succeed, even when teachers told him he wouldn't amount to anything. He never wanted to put his parents through anything that would cause them grief ever again. His mom's cancer has since been in remission.