5. One of the things you probably know about van Gogh is that he cut off his ear. What happened in December of 1888 to lead to his self-mutilation?
From Quiz Death of an Artist
Answer:
He was upset after an argument
Only the argument (with Gauguin) actually ever happened. He never married or had children, although he once wrote that he considered his paintings to be his children. Despite van Gogh's admiration for Gauguin, and his desire that the two of them set up an artists' colony, it seems that the relationship was strained due to clashes of temperament. Gauguin arrived to stay on October 23, 1888; the famous argument, during the course of which van Gogh threatened Gauguin with a razor, occurred on December 28, 1888. By the time van Gogh got back to their shared house after being treated in hospital for his injury, Gauguin had packed his things and left.
There is some debate as to whether van Gogh simply sliced off a bit of his earlobe, or removed the entire outer ear, or something in between. In fact, it has been suggested that it may have been done by Gauguin in the course of their argument!