Teach the child real names for all the child's body parts. Understand things from the child's viewpoint then help the child adapt to requirements. Work on one thing at a time. Don't act like your two year old. Parents never know what to expect.
Temper tantrums increase and are used for attention and control.
Masturbates frequently Wants to be treated like a baby when the child gets tired. Patient, kind, firm parents. Instead of spanking all the time, learn to ignore attention-getting misbehavior when possible. Take over for the child when necessary. Separation is useful for both child and parent.