A fun game to play with friends and family is to identify those tweets that may be indications of NPD.
What is the difference between NPD, psychopath and sociopath?
Note: NPD traits overlap with those of a psychopath and a sociopath. But there are significant differences. In addition to the NPD traits, a psychopath is usually very smart, well educated, plans his/her actions very carefully, uses charm as a way to manipulate others, and is unable to make personal connections. A sociopath exhibits extreme antisocial attitudes and behavior and a lack of conscience. Read more about Narcissistic Personality Disorder.