Feral kids
A feral kid has no rules, no schedule, no stability, and no respect for anything. They look wild eyed at new encounters/people. They typically only socialize with blood relatives. It is possible they are not socialized out of there immediate circle creating strange ways and ideas with inability to carry normal conversations. These children are least likely to be involved in sports or organized activities. Most feral children are home dwellers where they don't have to conform to society and normal activities. These feral children are not necessarily misbehaviors but they are sneaky in nature. They have over exposer to adult programming, images, and information to mature for their years robbing them of their innocence and peace.
Those kids are feral they have no bedtime and cuss all the time, they have no respect for anyone at all and watch nothing but adult programming. No child should be exposed to their own parents pornography but those feral kids are.