Absalom was the oldest of David's sons and felt that he was in line for the throne. After he killed his half brother Amnon, he fled the city and, during a battle against his father, he hopped on his donkey and ran away. But Absalom had had really long hair, and it got caught on a low hanging branch. he was pulled off his donkey and left hanging there. Joab, David's right hand man, found him and killed him.