Teens perceive death much like adults do. But they may express their feelings in dramatic or unexpected ways. For example, they may join a religious group that defines death in a way that calms their feelings. They may try to defy death by participating in dangerous activities, such as reckless driving, smoking cigarettes, drinking alcohol, taking illegal drugs, or having unprotected sex. Like adults, preteens and teens can have suicidal thoughts when grieving. Warning signs of suicide in children and teens may include preoccupation with death or suicide or giving away belongings.