Bullying is a common experience for many children and adolescents. Teasing, ignoring, or intentionally hurting another child are all types of bullying. Harassment and sexual harassment are also considered forms of bullying. Bullies may be large and aggressive, but they also could be small and cunning. Victims of bullying have poor self-confidence and typically react to threats by avoiding the bully. Both bullies and their victims make up a fringe group within schools. Those children who bully want power over others. Both bullies and their victims feel insecure in school. Boys typically bully by using physical intimidation. Girls bully in a less obvious manner by using social intimidation to exclude others from peer interactions.