The answer to this question is the term schizophrenia. Schizophrenia is a mental disorder when a person hears voices that are unusual and this voice wanted to hurt the person. The person that is schizophrenic is experiencing delusions, confusion, psychosis, and loss of personality.
The answer to your question is five or more servings a day.
You can identify the twin by asking for their name and they boy and girl so you will know who is who by their name.