This applies to a wide range of behaviours that are seen to present difficulties, and may be socially unacceptable. Such behaviour is often intimidatory or invasive, such as outbursts of aggression, both verbal and physical, or sexualised behaviour. It may mean a person is simply behaving unsuitably in certain social situations; for example, it is appropriate that a child is friendly among friends and family, but such behaviour becomes inappropriate when a child is indiscriminately friendly to strangers