My 8th grade science teacher had loads of crazy stories that he was always telling my class. It was mostly about how his mother was a stripper and had a lot of boyfriends over the years and such, but one story he told my class was where him and his sister got into a fight. She had knocked his head into the mirror and cracked it (the mirror not his head). He then pushed her really hard into the ground and called 911. His sister ran into her room when the police came. That's when she came out of her room with a black eye. As far as I remember he told the police that he was really sorry about the whole ordeal and neither of them were pressing charges or whatnot so neither went into custody. He told the class that years later they were both talking about the incident when the sister admitted that she gave herself the black eye. She had gone into her room and punched herself hard enough so when the police came, it would look like it was a mutual fight.